VACheck and VAOption controls will appear selected only if the VAValueTrue property value is found in the logical field. When a selected VACheck or VAOption is turned on, the VAValueTrue property is placed in the field associated with this control. Placing a 1 in this property will cause a character value of 1 to be written to a 1-byte logical field, or an integer value of 1 to be written to a 2-byte logical field. The numeric value range is dictated by the logical field size: 0 to 255 for 1-byte logical fields,
-32768 to 32767 for 2-byte logical fields.