Acceleration unit in simscape

I am writing vehicle model Simscape block and I need acceleration unit and variable in that unit,(m/s^2) in the equations, but I get error when I tried to build my custom block: Provided units 'deg/s^2' and 'm/s^2' are not commensurate.

[Swarooph]

What are you connecting the custom block to? It seems like you are connecting a translating quantity (m/s^2) with a rotating quantity (deg/s^2)..