Animate grid rows

I’m having trouble animating a grid row. Not sure why as I’ve done it successfully in other apps.

This is my code
$("#SMGrid tr").eq(ssRow).animate({height: “25px”,fontSize:14})

It changes the row height but the fontsize is not changing. Fontsize needs to be set to 0 to hide the row. It just won’t animate back to the 14px I’m needing. I’ve tried “14px”. Anything I’m missing?

The solution I’ve found, for others’ future reference, every cell in the row MUST be the same fontsize for the row to animate.