Smarty Tags and FormBuilder

[yateri]

Hi,

I want to hide a field "file" in my form with Start and StopExpandCollapse tags.

For example :
- Subjet
- Message
- Text static {startExpandCollapse id...}
- File attached
- Text static {stopExpandCollapse}
- Submit

I checked the "Process smarty tags within field?" option, but ... it doesn't work, instead of being interpreted, tags are just displayed in the form.

Any idea ?

Thanks

Yat'