Publish Additional file DXF under parameter condition

Dear All

I need to understand if is possible enable the worker to publish also the DXF format for the Drawing but only  under parameter condition.

My idea is define a boolen parameters on EPM Document like   DXF_Publish   TRUE/FALSE and the make the system

able to publish r  DXF file if the above parameter  was set TRUE.

Thanks to everybody  have the solution

Beniamino