if statement

[krmvacar]

Hi, 

I'm trying to rank hierarchies and I'm trying to write dimension.

Level=1 Manager,Level=2 Manager Helper ,Level=3 Employee

if selected level 1 show me level 2 names. 

=if (LEVEL=2,if(LEVEL=1 and PRED=WORKNUM,NAME))

 its not work:(

please help

[krmvacar]

Thank you so much.its ok