Hold action doesn't open other application

[ahkbar]

Checklist:

• I updated to the latest version available
• I cleared the cache of my browser
• I read the FAQ and the issue I'm having was not mentioned there.

Release with the issue:

Last working release (if known):

Browser and Operating System:
Full kiosk browser

Description of problem:
The hold action doesn't open another application. Fault message is: Required key not provided @ data['application']
The code used with other cards works fine:
hold_action:
action: call-service
service: fully_kiosk.start_application
target:
device_id: xxxxx
data:
application: com.supportware.Buienradar

Opening another webpage etc. works fine.

Javascript errors shown in the web inspector (if applicable):

Additional information: