But. how can I do it in multiple conditions (for example, if I want to check fo not equal some other field like "caller_id_name", ...)?
I.e. Something like:
   <condition field="caller_id_name" expression!="^!Extension 1001$"/>  <!--NOT EQUAL-->
   <condition field="destination_number" expression!="^!400$"/>  <!--NOT EQUAL--><!-- IVR -->
   <condition field="destination_number" expression!="^!399$"/>  <!--NOT EQUAL--><!-- Group number -->
   <condition field="destination_number" expression="^(\d{3,16})$">