if( Test_Mode.state == ON && //ITEM CHANGED TO DISPLAY
(In_Bed.state == ON || // IF ANY OF THESE ARE ON SET TO ON AT THE SAME TIME DISPALY TO TEST MODE AS THESE ITEMS ARE LESS IMORTANT
Kids_Holiday_Mode_SCHOOL_HOLIDAY.state == ON ||
Weekend.state == ON ||
Away_from_home.state == ON ||
Movie_Mode_Enabled.state == ON ||
Disable_Amp_Rule.state == ON ||
Trigger_Tylers_TV.state == ON ||
Trigger_PowerOffLR.state == ON )) {
System_Status.sendCommand ("TEST MODE")
}
Put all the ORs in () as one boolean
But really you should look at this: