I was using Smarty 2, and I am just beginning with Smarty 3. My problem is that I can't use my own modifiers anymore.
For example, I have a modifier called "smarty_modifier_my_test&qu ...
I think your problem comes from the space between First and Name. For your variables, you should use _ instead of space.
In php : $openClaim['First_Name']="Paul";
In TPL : $openClaim.First ...