BIRT formatting - merge cells on specific rows -

how merge cells specific rows in birt? similar using colspan when creating table in html. data extracted database , returns fixed number of rows.

specifically want convert birt report looks this:

to this:

thank assistance.

i don't know if possible within oncreate event cells.

but depending on use case, may sufficient duplicate detail row. keep cells in first detail row , merge them in second row.

determine condition when merge cells , when not.

use visibility expression first , second detail row this:

first row: should_merge(...)

second row: !should_merge(...)