cObject would refer to an object in a container object. I believe this would have to be the object name so I don't think it would work for what you want unless you want to search for a specific textbox. So you could do PEMSTATUS("MyForm","MyTextBox",5) to see if MyTextBox exists. But if you want to see if you have any textboxes, then you would need code similar to my first response.
HTH

>Hi,
>Thank you for reply.
>PEMSTATUS(oObjectName | cClassName, cProperty | cEvent | cMethod | cObject,
> nAttribute)
>
>What does cObject in 2nd parameter's column meant?
>
>If I want to write an general function to determine are there any textbox existed in my form using pemstatus, how to do so? as PEMSTATUS("textbox","value",5)??
>
>Thank you