how to put text with formulas?

Hello, I am using Dia (dia-gnome 0.97.2) to draw a simple diagram with some simple formulas. I put $\beta$ on it. But Dia does not give me the results I want. Did I use it in a wrong way? How can I add text with formulas? Thanks! Best Regards, Wenhao Jiang Diagram1.dia Description

Fwd: how to put text with formulas?

Hello, I am using Dia (dia-gnome 0.97.2) to draw a simple diagram with some simple formulas. I put $\beta$ on it. But Dia does not give me the results I want. Did I use it in a wrong way? How can I add text with formulas? Thanks! Best Regards, Wenhao Jiang Diagram1.dia Description