XY plotting is sin-function

Hello

I'm new in Mathcad and having a stupid issue regarding sin-function X-Y plotting and x/y-axis unit labbeling.

1. In attached file defining angular speed unit as rad/s, no plotting of ik(t) as obtained.
   Deleting the angular speed unit definition, plot is OK.
   Why? What do I miss?
   
   
   
2. I want to plot the x-axis (time) in milliseconds.
   When defining the x-axis unit as "ms", the entered dat is overrulled and replaced autoamtically by "1/s.ms".
   Why? I don't understand.
   How to arrange to get the x-axis label in simply "ms"?

Thanks in advance for your help.