Process model and variables

Hi,

I have a process model like below

I have the data in each of the variable like below.

Name                    Type          Multiple     Value

--------------------    ----------        ----------     ------------

listOfSubmitters    Text           Yes           [addedby:AA1234]; [addedby:AA1235]; [addedby:AA1236]

I need the value of each "addedby". When I am trying to make a loop and get each addedby like below. I am NOT getting required output. 

a!localVariables(
local!lst: a!forEach(pv!listOfSubmitters,property(fv!item, "addedby", null)),
local!lst[pv!totalCountOfSubmitters]
)

Please advise if I have to declare the process variable with any other type instead of "Text".

Or, let me know if anything wrong in above code.

Thanks in advance.