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It can't be done that way. <br />
<br />
Assuming the subreports only have 1 row per detail row it is possible.<br />
<br />
You need to insert a section below DetailsB.<br />
Move everything except the subreports to detailsC.<br />
Set detailsB to UNDERLAY FOLLOWING SECTIONS<br />
<br />
Subreports are the last thing evaluated in the section so the values from the shared variables aren't updated until after the section is rendered. &nbsp;By moving everything down a section except the subreports, the values will be available in DetailsC and you can calculate the column.<br />
<br />
Underlaying will align the subreports so they show appropriately or you can have the subreports show nothing and display the shared values from the main report in details C.<br />
<br />
mlmcc
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I have created DetailsC....I moved everything to DetailsC that was in DetailsA...DetailsB still shows the sub report...Underlay has been turned on...<br />
<br />
But the values haven't changed.. what am i missing?
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What was in Details A?<br />
<br />
The values in the subreports won't change. &nbsp;If you want to use the values in the main report you have to do it in Details C.<br />
<br />
Can you upload the report?<br />
<br />
mlmcc
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Thanks again for putting up with my stupidity...here is the report<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/02_w07/1080945/POvsForecast.rpt" target="_blank" class="file-inline" title="POvsForecast.rpt (64 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>POvsForecast.rpt</a>
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POvsForecast.rpt

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So where is the value for DetailsC??? I thought we needed to add a section.. Not complaining because this works.. just curious
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I didn't realize the on hand column was being done in the subreport. &nbsp;I thought that was in the main report in which case you needed the third details section.<br />
<br />
mlmcc
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sorry late awarding..but works well
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<div>
<div class="content wysiwyg-content">
I believe I have to use Shared Variables but not sure how...<br />
<br />
In Main Report.... in Detaila I have QtyOnHand...<br />
<br />
I have a linked SubReport within Detailb...Detailb as 2 values.. 1 is Forecast the other is PO....<br />
<br />
I need the QtyOnHand to Add to the Forecast and Subtract the PO... The Result needs then to look at the Next row of Forecast and PO and have a new Result..Continuing all the way however many rows are in the SubReport...at the bottom of the either the SubReport or Main Report I need to be the Net of all Results, Forecasts and PO..<br />
<br />
Hopefully this makes sense<br />
<br />
I have included a snapshot of what I am looking for in jpeg..<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/02_w07/1080802/RunningTotal.jpg" target="_blank" class="file-inline" title="Screen Shot of passing Value to SubReport and using it to configure a running total (68 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>RunningTotal.jpg</a>
</div>
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Screen Shot of passing Value to SubReport and using it to configure a running total

RunningTotal.jpg

I believe I have to use Shared Variables but not sure how...

In Main Report.... in Detaila I have QtyOnHand...

I have a linked SubReport within Detailb...Detailb as 2 values.. 1 is Forecast the other is PO....

I need the QtyOnHand to Add to the Forecast and Subtract the PO... The Result needs then to look at the Next row of Forecast and PO and have a new Result..Continuing all the way however many rows are in the SubReport...at the bottom of the either the SubReport or Main Report I need to be the Net of all Results, Forecasts and PO..

Hopefully this makes sense

I have included a snapshot of what I am looking for in jpeg..

Running Total between Main Report and SubReport

Crystal Reports is a business intelligence application from SAP SE. It is used to graphically design data connections and report layouts from a wide range of data sources including Excel spreadsheets, Oracle, SQL Server databases and Access databases, BusinessObjects Enterprise business views, and local file-system information. Report designers can place fields from these sources on the report design surface, and can also deploy them in custom formulas (using either BASIC or Crystal's own syntax), which are then placed on the design surface. Crystal Reports also supports subreports, graphing, and a limited amount of GIS functionality.