Split texture in flipbook material

Hi, I’m a super noob with materials and I’m struggling with this in the last couple of days.

I have a 4x4 spritesheet which includes 2 animations, 4 cols and 2 rows each.
I’ve already created a flipook mat which loops through all of the 16 sprites, but what I want to do is to tell the material to consider just the last 2 rows of the sprite.

This is the very basic setup I have.

How can this be done?

The easiest way is to control with Animation Phase.
If you enter the time between 0.5 and 1.0 in the node, it should be the second half animation.

it works like a charm! i followed another similar thread with a similar solution but it was not adding the 0.5.
thanks mate, you made my day!