Hi Ushnish,

Actually, when I added a LC with ID 1 the solver starts, again without going through the subroutine.

When I change -1 to -2 on the boundary condition card and I add a LC with ID 2 the solver still gives the same error "Load Curve ID 1 not found".

So I am confused as to how that works.

Does the magnitude of the negative number mean anything to the solver?

Does the solver always look for LCID 1 when a negative number is applied?

Many Thanks,