Expression as C = Expr_Get()
Return the expression if field is a calculated field.
The .EXPR_GET() method returns the expression for a calculated value that has been defined at the form level. Note : This does not apply to a calculated field that is defined at the Field Rules level.
? invoice:total.Field_Get().expr_get() = "total(INVOICE_ITEMS->Extension,GRP >INVOICE_HEADER)"
Desktop applications only.