forgot to mention - you can't easily update the values on the screen dynamically - if the changes need to be displayed straight away in the subfile then you have 2 choices
1) repopulate the subfile
2) use UIM lists instead of subfiles
the key here is the command READC (read changed record)
READC FORMATNAME
this will return those records from a subfile that have been changes while on the screen - i.e. the option field has been updated
loop through these records and process each one as appropriate
keep in mind that if...
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