How set value of textbox on form with a macro?

I have a temp value "TempLocID" and would like to set the value of a text box [LocID] in a form that is already open and on the correct record.  I need to set this value with a macro.  How do I do this?  Assume that the macro is already running, has just set the temp value, and put the focus onto the previously mentioned form and record.
BDAsked:
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rspahitzCommented:
Have your tried this somewhere in the macro:

[LocId].Value = TempLocID

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?

With ".Value" you don't need to set the focus.
BDAuthor Commented:
No clue where to put that.  What macro action should I be using?
rspahitzCommented:
It depends on when you want this to happen.  Basically you need to identify a" trigger" for this action, such as "when someone changes text in a text box (TextChanged event) or when the form is about to be saved (BeforeSave event) or when the use leaves a field (Leave event) or maybe when the record is first loaded (Current event).

e.g. on the Form object, in the properties' Events tab, double-click "On Current" and then click the [...] button to get to the code window and enter the above code.
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BDAuthor Commented:
The trigger will already have occurred.  Review the last sentence in my original post: "Assume that the macro is already running, has just set the temp value, and put the focus onto the previously mentioned form and record".  

So I have a good handle on how to trigger the event as the macro will already be running.  Where I am lost is understanding what additional actions I need to add to the currently running macro in order to set the value of the [LocID] text box with my temp value.
rspahitzCommented:
Ah, I see the problem.  You create a "new macro".  Perviously Microsoft called VBA code macros.  With VBA macros, the above code works perfectly by simply inserting it into any appropriate sub.

If you don't want to migrate everything to VBA, then add the following:

Action = "SetProperty"
Control Name = LocID
Value = TempLocID

I haven't worked much with these macros in a long time, so see if the above works.  If not, attach the spreadsheet (minus any proprietary data) and I'll see what I can do.
BDAuthor Commented:
I have discovered the very macro action that accomplishes what I need to do!

It would appear, when using macros, that there is indeed a "SetValue" action, but MS Access hides it by default not allowing users to utilize this "Unsafe Action".  On the Design tab under the Show/Hide section there is a "Show All Actions" toggle button.  When active, users can see a whole new world of macro actions available to them.

Stupid, just stupid...

Thanks rspahitz for your assistance.

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BDAuthor Commented:
No other comment answered my original question, though rspahitz was helpful and eager.
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