>>>>Terry,
>>>>
>>>>Checkboxes can have 3 values
>>>>
>>>>if (vartype(m.this.Value) == T_LOGICAL )
>>>> TRUE, FALSE or NULL
>>>>
>>>>else >> Numeric
>>>> 0, 1, or 2= null
>>>>endif
>>>>
>>>>If, in your case it can only be true/false or 0/1, use empty(m.this.Value)
>>>>
>>>>You can force its type to be logical by
>>>> (1) binding it to a logical Field, or
>>>> (2) if it does not have a controlsource, setting its default value to .T./.F. in the class
>>>
>>>Hi Greg
>>>
>>>Yes I knew this (as I indicated in my spiel), and that one can set the default value (as I said I now have done), etc. My beef is that I put the checkbox on the form, wrote code to accommodate it, then it went and changed its data type from T/F to 1/0.
>>>
>>>Cheers
>>>
>>>Terry
>>
>>Terry,
>>
>>Change your test to if( !empty(...Value) ) instead of if( ...Value ).
>
>Thanks, Greg but what test are you talking about?


The operator/operand type error of your first message

Testing Empty() works on both numeric and logical data types