Attribute Holder problem

[ramdas]

Hi I Am abhishek
I have a problem in max rigging.
I have added an attribute holder to controller curve and wire parameter it to another object ( IK-FK switch) and same for foot control.
It works for first time but when i save file and again open it it does not work .
I have used it with wire parameters , expression etc but nothing works
I have also tried custom attributes but not working