Stacked fractions

I know how to use horizontal fractions as the default when dimensioning. However, sometimes I need to use a text override. I can't seem to make the dimension a horizontal fraction, even if I type 1^2 in the text override box. Does anyone know how to fix this?

[GREYWETHR]

Select the dimension, then goto "Properties", and in the "Text" category, you should see the option to change the "Fractional Type" to horizontal, diagonal, or not stacked.