Unable to fetch the tab

Hi Friends,

I require two tab's in parent level lets say tab1 and tab2 followed Y axis splitter and then the two tabs that is in line level tab1 and tab2 but am getting in above way i added a splitter as mention in the below blog. Please help us on this. 

blog :dynamicsaxgyan.wordpress.com/.../splitters-in-dynamics-ax-x-sysformsplitter_y-sysformsplitter_ybottombound

Thanks in advance