Different smart forms for the same output type

Hi all,

I have a requirement where my client wants to maintain the plant specific versions of the smartforms in Inventory management.

i.e: the Smart-Form1 has now deifferenet versions Smar-Form1_XXXX for every plant. Now these smartforms are assigned to plants via a output type WE02. Now how can I assign these smartforms to their specific plants without introducing new output types.

Thanks

Suhas