fixing DOMpdf not generating hebrew characters

i have an open-source crm (web based) the system works fine when exporting pdf in english, but when i change the interface to hebrew, there is no text at all, i think the system using DOMpdf 0.8 to generate the pdf's - propably something with font/ utf-8 unicode link to the crm: [login to view URL] attaching 2 png's - one english which works, and hebrew - no charachters at all