--- /dev/null
+##parameters=key, value, allowFalse = 1
+sd = context.session_data_manager.getSessionData(create = 1)
+if allowFalse :
+ sd[key] = value
+ return value
+else :
+ if value :
+ sd[key] = value
+ return sd.get(key, None)
\ No newline at end of file