Dear all,

how do I union some subsets in my model?

consider the following sets and subsets:

SETS

i/0*7/

subV_T(i) /1*3/

subV_DE(i) /4/

subV_DO(i) /5/

I want to define a new subset which is the union of subV_T and subV_DO. How can I do this? I do it the same as what is expressed for the union of sets but I get an error.

I appreciate it if someone can help me.

Thanks and regards,

Bahar