What are the controlsources or initial values for the textboxes?

You have to make sure that your textboxes are of the correct type (dates and numeric for the period).

It is also a good idea to always use meaningful (?spell) names for form's controls, e.g. txtStartDate, txtNumDates, etc.

>Hello Experts!
>
>In a form I have 4 text. In text1 , text2 and text3 I am entering Date. And in 4th text a period.
>I want to check the period.
>
>In valid event of Text4 I coded
>
>

>
>If ((thisform.text1.value)+(thisform.text4.value))>(thisform.text3.value)
>
>=Message("You have Entered a Higher Period",1)
>return 0
>endif
>
>

>
>i.e, if text1.value=("12/12/2005"),
> text4.value=24,
> text3.value=("12/11/2006")
>I have entered a higher period value at text4.
>
>My code is not giving me the desired result.
>
>Please help me.
>
>Chandan