>Hello Experts!
>
>In a form I have four fields. d1,d2,d3 and lnPeriod
>d1=ctod(" / / ")
>d2=ctod(" / / ")
>d3=ctod(" / / ")
>lnPeriod=0
>
>My condition is that the value of d3 should not be greater than
>d1+lnPeriod. So in the valid event of txtperiod, I write:
>
>

>
>if ((thisform.txtdate.value)+(thisform.txtperiod.value))>(thisform.txtdate3.value)
>=messagebox("Please Check Your Entry",1)
>Return 0
>endif
>
>

>
>But I am not getting the message box.
>
>Please help.
>
Chandan,

What are the types of the textboxes values? Did you try to use variables for textboxes values to see and step this code in the debugger?