hi,
thank you for reply and clarification.

>Hi,
>
>>what is the different between lcEditValue and pcEditValue(lc and pc)
>
>That's a naming convention. In the code lcEditValue has been declared as LOCAL, pcEditValue as PRIVATE. The main difference between LOCAL and PRIVATE variables is that LOCAL variables are only visible within a single method or procedure. PRIVATE variables remain accessible in any called function.