Hi All
Thanks for all your help in the past but here I am again.

This may be a simple one but its driving me crazy.
All I want to do is associate a dimension with a wall, so that should I move the wall the related dimensions will change accordingly.

I have set the dimassoc to 2 I have dimension-ed the wall at its centre and not the ends.

When I move the wall the dimensions do not change accordingly however if I Open the properties pallet then this shows that the dimension is not associative and If I open the quick properties then this also shows the dimension not associated and is greyed out so that I am unable to change it.

please see image attached.dimensions.png

I have re installed auto cad and repaired the new installation but to no avail.
any help gratefully received
John