Dear Fadi,
Thank you for your question. For getting only the instances of a special relation using the command GET_CONNECTORS can be done in the following way:
1CC "Core" GET_CONNECTORS objid: (objid)
2#-->RESULT ecode:intValue objids:strValue
3SET sConnectorList: (objids)
4SET sFlowConnectorList:""
5FOR i in: (sConnectorList) {
6 CC "Core" GET_CLASS_ID objid: (VAL i)
7 #--> RESULT ecode:intValue classid:intValue
8 SET nObjClassId: (classid)
9 CC "Core" GET_CLASS_NAME classid: (nObjClassId)
10 #--> RESULT ecode:intValue classname:strValue isrel:intValue
11 SET sObjClassName: (classname)
12 IF (sObjClassName="Flow") {
13 SET sFlowConnectorList: (tokunion (sFlowConnectorList , i, " "))
14 }
15}
In this case I would suggest you to work with AQL. The following AQL delivers the same output like the AdoScript above.
1CC "Core" GET_OBJ_NAME objid: (objid)
2SET sObjname: (objname)
3CC "AQL" debug EVAL_AQL_EXPRESSION expr: ("({\""+sObjname+"\"} -> <\"anyRany\">) OR ({\""+sObjname+"\"} <- <\"anyRany\">)") modelid: (modelid)
You can find the AQL documentation at the following Link:
http://www.adoxx.org/live/adoxx-query-language-aql 
www.adoxx.org
