getCaseSysChanges.cls

public class getCaseSysChanges {
	 public Id caseId {get;set;}
    	public List<System_Change__c> getSysChanges()
    {
        List<System_Change__c> sysChanges;
        sysChanges = [SELECT Name, Type_of_Change__c, Target_Completion_Date__c, Description_of_Change__c FROM System_Change__c WHERE 
                      RecordType.DeveloperName ='MarCom_Secondary_Sys_Change' 
                      AND Case__r.Id =: caseId];
        return sysChanges;
    }
}