how can i merge column head xml publisher rtf

Moo+

dear all,

i don't know how can i add command to merge column in B1 if text duplicate. please suggest to me. i add picture at this discuss.

at this below i want to merge head1 in column1,2 (aaa,bbb) / merge head2 in column 3,4,5 (ccc,ddd,eee)

head1 head1 head2 head2 head2

aaa bbb ccc ddd eee

row1 xx xx xx xx xx

Regard,

Moo

pic1.png