technical answer is because in .init () you used LPARAMETER and not PARAMETER
using Al's hint is the better approach than to switch from LPARAMETER to PARAMETER

;-)


>

>do childrorm with thisform
>

>the child form init method
>

>lparameters opform
>

>I can display out the value of the opform.nlineno in the child form's init method,
>

>Messagebox(opform.nlineno)
>

>but I can't display out the value in the Button object in the child form's click method,
>it prompt me an error message, "object opform is not found", when I click the button in the child form.
>
>Why ?
>Please advise
>
>Derek Yim