FScrollbar and dynamic text

I have a dynamic textfield that gets text from a cgi script. I am using loadvariables with the get method: it works fine, I can get the text to appear, no problem. What I need is to get a FScrollbar to work with this text as the text consists of many lines. I find that if I change the textfield type to ‘input’ and test, I can get the scrollbar to work IF and ONLY IF I place the cursor on the textfield and type say a single character. Is there a way to get the scrollbar to automatically ‘know’ that there is text in the dynamic textfield?

All help appreciated, and thalaivar Chinnathambi, your suggestion for a textfile generated text seems to be the starting point, though I am unable to adapt the code for this case, which involvbes pulling variable values from a cgi script.