Inactive Dimension Style Text Height

For some strange reason, I'm not able to change the text height on my dimensions. I tried changing it in the property dialog box and regen, but nothing happens. I looked into my dimension style setting, and the text height is grayed out. Does anyone know why or how I can fix this? Your help is much appreciated, Thanks!

check the text height in text style dialogue box for the style you are using in dimensions. Normally you should keep it the ht. '0' in text style dialoguebox to enable you to chnage it in dimension style.