H2 put a line in a color if a condition exists in a list

[#1]

Hello,

I'm new to Qlik

I try to setup a Qlik application to display path between components of a IS system.

I have a fact table with every link between my components + information on the link : is it synchronous or asynchronous ? etc..

Something like :

ComponentCaller ServiceCaller     ComponentCalled  ServiceCalled   TypeOfCall   etc....

I'd like to display a summary page to sum up which component calls which globaly and wether there is at least one synchronous call between the two. :

     component A calls ComponentB. (whatever the services called, etc...)

     and put ComponentB in 'red' if it is a synchronous call.

The problem is that in my Fact table I have many lines with ComponentA calling ComponentB.

And I don't know how to tell QLik to use red if at least one has a 'synchronous' value in 'TypeOfCall'. It seems QLik uses the first value that it found on the Fact Table that matches A & B. So if the first call registered is asynchronous, it doesn't put the link between A & B in red...

There is no 'exists' function on the color expression... I tried if (exists(TypeOfCall, 'synchronous') but it is not reckognized.

Thanks for any insight on how to solve that