Problem with displaying serial-number correctly after discovery

[ozzy]

Hi,

I have a ZTE OLT. I create a new Templates for this devices(all templates found on the network don't have the data I need).
I create discovery rules: ONU and put to SNMP OID : discovery[{#SERIAL}, .1.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6] (I use these serial numbers later to identify devices). Teroreticly it's working, but some of the result is not in good format(I need HEX-STRING, I.ll get it STRING). Wen i do snmpwalk from console i see, that is a problem witch device(also i see some of the description is in string format).
I fount solution: snmpwalk witch -Ox flag, but i don't known, how i can add flag on Zabbix to discovery OID.

This is the output from snmpwalk withoun't flag Ox(xx is hidden sign:-)):
iso.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6.285278731 .2 = Hex-STRING: 5A 4E 54 53 xx xx xx xx
iso.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6.285278732 .1 = Hex-STRING: 5A 4E 54 53 xx xx xx xx
iso.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6.285278732 .2 = STRING: "ZNTS;
xxx
iso.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6.285278732 .3 = STRING: "ZNTS;
xxx
iso.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6.285278732 .4 = Hex-STRING: 5A 4E 54 53 xx xx xx xx
iso.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6.285278733 .1 = Hex-STRING: 5A 4E 54 53 xx xx xx xx
iso.3.6.1.4.1.3902.1082.500.10.2.3.3.1.6.285278733 .2 = Hex-STRING: 5A 4E 54 53 xx xx xx xx


With a flag, all results are Hex-string. If it copies the string, the asci-> hex calculator will show the correct value

Is there any solution for this ??