HMC - craring new Managment Resource Role

Hello,

I need help with creating Managment Resource Role on HMC v7. I can assignee whole machine to new role but I can't do this with single LPAR. I can't even open list of LPARs, i can see only list of machines connected to this HMC. Do you know how I can solved this problem. I have to create new role with only few LPARs (not whole machine)

HMC Management -> Manage Task and Resource Roles

create a new role with just one lpar, then create a new user and assign this role to that user

Edit: oh you try to create a role, and not a user, sry
hmm I've a drop down menu for each managed system, showing all lpars

are you logged in as hscroot?

I tried with hscroot but i have still the same problem. Maybe problem is with version of HMC. Could you tell me which version and patch you have (on which version is working)?
It's very strange because i can see Manage systems, but i can't open list with LPARs :(. The same problem is when I'm trying to create new task role. I can see WUI Permission, but i can't open this list.

I found solution.
Service Pack 1 for HMC 7.3.4 will fix this problem.