Hi, is there a code in culumn effect to set sample loop start and end with different offset?
It s not automationable 
it could be wicked effect!
no, there is no currently such effect, sorry.
some discussions about forecoming XRNI features are in the direction of automating such parameters, though
Interesting suggestion, can be helpful in some ways… 
thank you!
It can be usefull you will see!!!
Trust me, lots of people have already asked about this one 