Possibly you need to set exact off.

Usually I use refresh ThisForm.CustType.method for this. Like:

this.visible=(lower(alltr(this.value))='prospect')

Also you could add it to the button click event.

>I need to make a field visible only when a condition is met in a fomr.
>I would like this to show when the record is shown in a form.
>
>Example:
>I am using the wizard control buttons for next, prev. etc..
>While scrolling through the records I want a field to show up
>if the contents ='prospect' only and not when it ='customer'
>
>Tried in all properties of CustType but it didn't work
>
>IF ThisForm.CustType.Value='prospect'
> ThisForm.CustType.Visisvle=.T.
>Else
> ThisForm.CustType.Visisvle=.F.
>ENDIF
>
>Any suggestions?
>
>Andy