Mask to find constant blocks in a subsystem and modify their values using a script

Hello,

I want to create a script which is capable to :

1- find all constant blocks in my subsystem

2- create a mask with parameters having the names of my constant blocks found

3- pass the values added by the user in the edit to constant blocks.

for the moment, i didn't find a solution to the third step. Can you help me with that please ?

Thanks