Setting the caption for Wizard Pages at Runtime

Hello
I am facing a problem in setting the caption for Wizard Pages at runtime, please help me. I am sepcifying the problem below :

In Wizard I want to Take the details for n number of customers ( n < 4). I am using four Instances of same PropertyPage class. I want to set the Caption for each page at runtime in the event OnSetActive();

depending on the instance of customer. I used SetWindowText(str) ;

in OnSetActive();

its not working.
Please help me.
Thanks in Advance

Kishore Kumar D
Bangalore.
India.