HELP! I cant add campagn with deluge. ERROR 500

Hi,

I try to add Campagn but i got error 500.

My code:

head = Map();

head.put("Authorization","Zoho-oauthtoken " + token);

head.put("Content-Type","application");

listkey ="3zca9967dc594a810a86d3990cdefecbb2f9c3596561bef762abeb0fdecebbab89");

param = Map();

param.put("resfmt","json");

param.put("campaignname",job);

param.put("from_email","mbabic@bmmconsulting.biz");

param.put("subject","Kako je u švici?");

param.put("list_details","3zca9967dc594a810a86d3990cdefecbb2f9c3596561bef762abeb0fdecebbab89");

info param;

rec = invokeurl

[

type :POST

parameters:param

headers:head

];

Response:

{"code":"500","error":"An internal error occured while processing your request","uri":"/api/v2/createCampaign"}

Please help.