Qlik sense - Devhub & Mashup editor (css)

[shaltix]

Hello,
I am a beginner in CSS development in the qlik sense system,
I'm building a MASH that contains data from two different apps.
I want to put a filter, say a customer, in MASH and when I filter a certain customer data from both applications will be filtered.

[oz_moyal]

Each model has its own independednt variabales, even if they are named the same

Todo this you will need to implement the filter yourself, 
ie display a dropd down with all the options (u can read all the field data from qlik)
and when selection is made , u will need to select the field in BOTH apps
ie 
app.field('customer').select([2], true, true);

app1.field('customer').select([2],true,true);

or you can have filer from one app, and use the event to select also in the second app