RE: Error 1 COBCH1624 : Cannot implicitly convert string to binary-long unsigned.

Not it doesn't work.

Unhandled Exception:FormatException

Input string was not in a correct format

at Void System.Number.StringToNumber(System.String str, etc.

In Cobol-wow to display a field numeric or not I use:

          CALL WOWSETPROP USING WIN-RETURN EDIT1-H "TEXT"

               NUMERO-CW.

and to get the value I use:

          CALL WOWGETPROP USING WIN-RETURN EDIT1-H "TEXT"

               NUMERO-CW.

That is simple and not errors. Why Visual Cobol doesn't have the simple solution, because to transformation of software that is very important.