How to place a progress bar with a generic position?

I have a gui with a progress bar as jave obj. i have used the below code

                    JavaProgressBar = javax.swing.JProgressBar;
                    [PB_O,PB_H] = javacomponent(JavaProgressBar,[85 175 200 18],handles.tab2Panel);

for creating and placing it in a position. But my problem is if i run the same code in different system the position of the Progress bar is changed.

help me, how to make the position unique for all the systems .

tnk you..,