regarding window length in smartforms

hi experts,

cant we adjust automatically the length of the window depending upon the length of the variable,,the scenario is like this i m displaying the variable for the plant name in the separate window here what is happening that some of the plant name is lengthy and some of them are very small ,the shorter one is coming but also it is showing extra space in the window,which is not desired how can we increase or decrease the length of the window depending upon the variable size..........plz help me.