[mrelwood]

I solved the above issue by assigning an id value for every initialization of the filter. The fixed parameters are now stored to (buffer+id*10)[0], ...[1] etc during initialization, and instead of the name, they are called only by the id value of the function call. Now all nested function calls can have an individual name, in format:
this.hp1.hp-run(input , id);

Still, if there is a better way to do this, I'm eager to learn!