xml - eclipse enide 2015 REST client header -

i using enide 2015 "restclient tool" within eclipse mars , although have included header information in following format, header not recognized , 500 error.

authorization: basic gus8gsiugs897g8u48= context-type: application/xml 

i have tried:

"authorization","basic gus8gsiugs897g8u48=" "context-type","application/xml" 

and

authorization="basic gus8gsiugs897g8u48=" context-type="application/xml" 

the headers multi-line text box allows 1 header entry per line.

in fact, when send rest message, response within request detail window, mirror of actual request, not include header. seems if used own header.

i know related authentication portion of header because works in postman. xml well-formed , schema-compliant. sure simple can find nothing on web site or anywhere else me past 1 hurdle.