editing REUSE_ALV_HIERSEQ_LIST_DISPLAY functionality

HAI,

I AM USING 'REUSE_ALV_HIERSEQ_LIST_DISPLAY' ....In the output i am getting a '' symbol for all the data in the header and when i click that i am able to see the items (like a tree view) ..but i want the <b>'' to be invisible</b> for my last record of the header ....How can this be achieved....

Regards,

Devendran