LayoutXL creating auto connectivity of custom cell

Hi,

I have question about auto generation the connectivity of my custom cell layout. When we update the instance from source, if it is from foundry device level, the tool will help to generate the instance and also highlighted the connectivity. But, after I build my own cell, it would import the instance only without highlighting the connectivity between cells. May I know the flow to build similar function as foundry device?

I use IC 6.1.7 version.