How to make "Distance1" parameter equal "Distance2" parameter automatically

[adadmun]

I've tried searching for this, but maybe I'm not using the correct nomenclature. What I need to do seems pretty simple, but I just can't seem to figure out how to do it.

See image below. All that needs to happen is have one linear action parameter link to a second linear action parameter. Basically, if Distance1 changes from 4' to 3', then Distance2 will automatically change to match it (4' to 3') on the other axis. I need it so that block only has one grip that affects both axis. I've tried using the parameter manager, but it always says that setting one to the other is an "invalid" expression.

[Libbya · Accepted solution]

Add another stretch action to Distance1 and have it stretch Distance2 with a 270° angle offset.