How to control the Dynamic text bar's size?

Hi Guys

I have two dynamic text bars which needs to come one after another and the text is coming from the text file as variables.

Can we Control the dynamic text's length to be exactly the same as text coming in from the variable of the text file? in thsi way whatever the text comes in my dynamic text bars can flexibly arranged according to that and there would be no gap in animation between two dynamic text bars.

The Dynamic text bar's length which i am giving is 500 and the next one is also 500 but as teh text in the text is not getting completely into the text bar so i increased the length to 1000 for each text bar, but as for the next time when i put a very short text in the variable of my text file, it creates the gap in between both the text lines offcourse, and that is a problem.

IF any one can help suggesting a better solution would be really appreciated.

Thansk
F.