>>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)

I though so. Open the debugger and run. If you hold the cursor over the This.Value in the trace window, you'll see what it is.