4GL Table Copy ?

I am using epicor Vantage and i am trying to get one table copy to another.
I have two fields from the same table.

Mfgsys.RcvDtl.PONum
Mfgsys.RcvDtl.Lotnum

For Each RcvDtl Where RcvDtl.Lotnum <> 0
DO: RcvDtl.lotnum = Rcvdtl.PONum

I know that this code doesnt work obviously it totally wrong. but this is what im trying to accomplish. I want The LotNum to Equal the POnum. I only need there the Relationship statment. the program will know how to execute it.
* EDIT*
I had Figured out a Solution my self, and the Code for this to happen is as follows. However

For each ttrcvdtl where ttrcvdtl.RowMod = 'A' and
ttrcvdtl.PONum <> 0:
       assign ttrcvdtl.LotNum = string(ttrcvdtl.PONum).
       end.

I would also like to Add that when the the Supplier Qty is 0 that it would not get a lot number so. this is what i have tried so far but it doesnt Seem to work. If you need more infor on whats happening i will try my best to explain
For Each ttrcvdtl where ttrcvdtl.RowMod = 'A' and
  ttrcvdtl.POnum <> 0 and ttrcvdtlMassRecepitsupplierqty > 0:
       Assign ttrcvdtl.LotNum = string(ttrcvdtl.POnum).
End.

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CollegeguyesAsked:
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mbizupCommented:
Collegeguyes,

Can you be more specific as to how this "doesnt Seem to work" ?

Your code seems to be logically correct.

The only problem I noticed is that you missed a "." in your reference to SupplierQty.  On line 2, it seems like:

> ttrcvdtl.POnum <> 0 and ttrcvdtlMassRecepitsupplierqty > 0:

Should be:

ttrcvdtl.POnum <> 0 and ttrcvdtl.MassRecepitsupplierqty > 0:

An undeclared variable, if it does not cause a compile error, will likely default to zero in a numeric comparison.  

For example, if ttrcvdtlMassRecepitsupplierqty is indeed a typo, the condition
ttrcvdtlMassRecepitsupplierqty > 0
will never be met, because the typo ttrcvdtlMassRecepitsupplierqty will be treated as a zero.
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progressorCommented:
Maybe it doesn't seem to work because you have a big table and you are not using an index?
What are the indexes on that table.
If POnum is the first field of an index and cannot be negative then change <> 0 for > 0. That would at least help progress finding the right ( or an ) index.

Casper
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CollegeguyesAuthor Commented:
JUst wanted to say thanks for you input i Actually Changed the way that i wrote the table in the end so the question is now void.
for each ttrcvdtl where ttrcvdtl.RowMod = 'A' and

                        ttrcvdtl.PONum <> 0 and ttrcvdtl.vendorqty = ttrcvdtl.OurQty.

                       

If ttrcvdtl.CheckBox01 = false THEN do:

Assign ttrcvdtl.lotnum = string(ttrcvdtl.POnum).

end.

If ttrcvdtl.checkbox01 = true then do:

Assign ttrcvdtl.lotnum = "".

end.

 

end.

 

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