>>If this can be solved. I have a combobox and a textbox and only one can be active at once. If the textbox has any input in it, the combobox should be dis-enabled so in the interactive exchange have:
>>if len(thisform.somectls1.mytextbox1.value)>0
>>thisform.somectls1.mycombobox2.enabled=.f.
>>else
>>thisform.somectls1.mycombobox2.enabled=.t.
>>endi
>>SO I test it by enter a little text in the txtbox and the combo becomes disabled like it's supposed to but when I backspace and remove the text from the said txtbox the combobox never becomes enabled.
>
>Use following:
>if not empty(thisform.somectls1.mytextbox1.value)
>etc.
>Also, if it's the same textbox.interactivechange then use just
>if not empty(this.value)
>...

A little improvement: instead of an IF, use directly

THISFORM.SOMECTLS1.MYCOMBOBOX2.ENABLED = EMPTY(THIS.VALUE)

Any structure like

IF condition
SOMETHING = .T.
ELSE
SOMETHING = .F.
ENDIF

is better coded (IMO) as SOMETHING = condition.