>I got this error msg now
>
>Operator/operand type mismatch (Error 107)
>
>When I try to put these codes in the click event. By the way, customer.choice is a character type
>
>if between(this.value, 1, this.buttoncount)
>replace customer.choice with this.buttons(this.value).caption
>else
>wait "Unexpected value "+str(this.value) window
>endif

>> Which line generates the error?

This line,
if between(this.value, 1, this.buttoncount)