How to highlight a Component Using Jlink?

I need to highlight the Component by giving its ID. 

//GET SESSION
Session session=pfcGlobal.GetProESession();
//GET ASSEMBLY
Assembly asm = (Assembly) session.GetActiveModel();
intseq seq1=intseq.create();
eq1.set(0, id);
ComponentPath	compath = pfcAssembly.CreateComponentPath(asm, seq1);
//SELECTION
Selection sel = pfcSelect.CreateComponentSelection(compath);
//SET HIGHLIGHT COLOR
sel.Highlight(StdColor.COLOR_PREVIEW);
//DISPLAY MODEL TO REFRESH SCREEN
 mod.Display();

This is working fine.But its failed to highlight the Second third level components.It only highlights the First level Components when i include the ID.please help me to solve this 

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