Cineversity

Hi,
I´m having problems with a constraint set to point clamp,
When I animate the main object It works more like a spring and the object clamped pass through it
I can´t find the way to fix the object to the point
The main objects is a character so it has lots of constraints
Could it be due to priorities of the expressions?
How can I fix it
Thanks

While waiting for an answer I found a solution changing priority from expression to generators.