Constraint COMP - how to apply Slider constraint to Y-axis only?

I’m trying to limit a single actor to translation in Y-axis only.
On the Constraint COMP docs i read “By default the slider constraint is applied on the X axis”. How do I apply it to the Y-axis instead?

answering my own question:
to limit translation to only Y-axis, set the Slider Rotation parameter to 0, 0, 90.
This means the constraint axis (default the x-axis) has rotated 90 degrees over the z-axis resulting in a vertical line which is then the new constraint. Took a bit to wrap my head around this :wink: