Chartset problem with Monitoring Service plugin

Hi to you all.

I installed Monitoring Service pluging for openfire , now conevsations in Arabic or Persian languages are archived but in “???” format !

I added UTF-8 to MySql database . No problem in other parts in Openfire .

I realized that the pluging calls for conversations through javascript inner.Html function to show it as a frame,targeted “conversation-viewer.jsp?conversationID=” + conversationID;" . When i open this page with an ID in a seperate window i can see the generated html doesnt contain any charset setting . How can i find and add charset to this page (conversation-viewr.jsp)? Thank you

solution was here :

https://www.igniterealtime.org/builds/openfire/docs/latest/documentation/databas e.html

for mysql database charset problem ,

in case any other has the same problem