How to move the pointer of B and s in cuda kernel

[Eutenacity]

I put two B and s in contiguous space like B s B s
And I send the ptr of the first B and s into the kernel as well as a pointer of offset tensor

I try to revise the code like
B = B + offset_ptr[0];
s = s + offset_ptr[1];

I want the kernel to run with the second B and s

But it seems that it dose not work

Can you give me some help?