Hi, I am having trouble creating a equation constraint in Abaqus. The equation I wish to enter is shown below in text form:

2

Part-1.Hole, 1, 1, Part-2.Hole, 1, -1

2

Part-1.Hole, 2, 1, Part-2.Hole, 2, -1

2

Part-1.Hole, 3, 1, Part-2.Hole, 3, -1

But I can't work out how to enter this into the table which is split up into columns:Coefficient/Set Name/DOF. The error message says only the first term can have a set and following terms must be a single point. I know abaqus can perform set1-set2=0 so why am I getting this error message? Thanks for any help you can provide.