Dual SIM event only for SIM1

Hi, I have event where i need use only for SIM1 in  my mobile phone with dualSIM. I don't know how to se up an event only for SIM1. For SIM2 I don't need any events. Anyone advise me what to put in the variable ? 

First event is call screened and second send sms with text.

EXPORT: 

Unknown Caller Week (12)
Restore: no Notification: no
Event: Call Screened [ Output Variables:* Caller:* ]
Day: Mon, Tue, Wed, Thu or Fri
Enter: Anon (11)
A1: Call Screening [ Disallow/Allow:Disallow Reject:On Silence:Off Skip Call Log:On Skip Notification:Off ]

Exit: SendSMS (13)
A1: Send SMS [ Number:%cs_number Message: TEXT SMS Store In Messaging App:Off SIM Card: Wait For Result:Off ]