Disable button if more textboxs are empty or input text

Hello, I want to disable a OK command button if 3no textboxs are empty or input any text(non-number),
with ISTextBox.value<=OOSTextBox.value. I write the code as following but not work at same time by all textboxs,
what wrong and how to do it? thanks and help.....
P.S. I had take false on enable item of OK command button

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Hello alee001,

Are you trying to make it so that the ok command button is disabled is all three text boxes are empty as once? What is one of them is empty and another has a value do you want it to be disabled still or enabled?

Thanks,

RVASQUEZ

Hi rvasquez, I designed open dialogue box then 3 textboxs prior are empty with disable OK button, OK button will enable after fill in all(3 not 1 or 2) textboxs with right condition at same time. how to do it? .....OK button always enable by fill any ONE textbox.

I solved the problem as following CODE by other, thks a lot

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