A post-write script cannot change data on the record just written, but in a line post-write you should be able to update a header UDF.

if you use a pre-write script you should be able to change your udf.

'pre-write so sales order detail

rVal = 0
commentString = ""
searchString = "xyz"

rVal = oBusObj.GetValue("CommentText$", commentString)

If InStr(commentString, searchString) then
    rVal = oBusObj.SetValue("UDF_CheckBox$", "Y")
End if

I haven't tested this, but I think that should work.   Assuming the UDF is in the same detail record.

E

But the UDF is in the SO header not the detail, so where would you reference the SO Header table.

If it is a header field, you can do it in either the post-write as Kevin M stated above or in the pre-write as I showed above, and just use the header object instead of what I did above.

instead of:

rVal = oBusObj.SetValue("UDF_CheckBox$", "Y")

use:

rVal = oHeaderObj.SetValue("UDF_CheckBox$", "Y")

If it is a header field, you can do it in either the post-write as Kevin M stated above or in the pre-write as I showed above, and just use the header object instead of what I did above.

instead of:

rVal = oBusObj.SetValue("UDF_CheckBox$", "Y")

use:

rVal = oHeaderObj.SetValue("UDF_CheckBox$", "Y")

Great thanks guys, just wrote my first script!

Hopefully that BOI award will reach you soon. (or a box of cookies)

Congrats!