How to restrict user to upload only 1 attachment at a time from Portal

[skumar_srbh]

Hi Team...

How to restrict users to upload only one attachment at once via the add attachment(paper clip) icon in ServiceNow portal for widgets(using clone of the widget "ticket attachment").

could anyone please suggest... 

Thanks in advance.

Regards,

Kumar

[jaheerhattiwale]

@skumar_srbh Did you try this?