https://community.hubspot.com/t5/APIs-Integrations/Traffic-Source-is-Incorrect-for-API-Form-post/m-p/226280#M5176 <P>Hi <A class="mention" href="https://community.hubspot.com/u/dadams">@dadams</A>,</P> <P>Thank you for answering. My Dictionary variable is called hsContext as shown on <A href="https://developers.hubspot.com/docs/methods/forms/submit_form" rel="nofollow noopener">https://developers.hubspot.com/docs/methods/forms/submit_form</A></P> <BLOCKQUOTE> <P>Dictionary&lt;string, string&gt; hsContext = new Dictionary&lt;string, string&gt;();<BR /> hsContext.Add(“hutk”, strHubSpotUTK);<BR /> hsContext.Add(“ipAddress”, strIpAddress);</P> </BLOCKQUOTE> <P>but I post it as “hs_context”</P> <BLOCKQUOTE> <PRE><CODE>// Append HS Context JSON strPostData += "hs_context=" + Server.UrlEncode(strHubSpotContextJSON); </CODE></PRE> </BLOCKQUOTE> <P>Edit:<BR /> Here’s the hs_context post data (was on localhost):</P> <BLOCKQUOTE> <P>“{“hutk”:“561f2e1ae22989c634d6815f88298463”,“ipAddress”:”::1"}"</P> </BLOCKQUOTE> <P>and the StrPostData value looks like this:</P> <BLOCKQUOTE> <P>“firstname=Garrett&amp;lastname=K&amp;email=test%<A href="http://40pacbell.net" rel="nofollow noopener">40pacbell.net</A>&amp;phone=(555)+555-5555&amp;eye_exam=Yes&amp;contact_lenses_exam=&amp;store_try_on=&amp;insurance=Yes&amp;appointment_location=TestStore1&amp;appointment_date=5%2f31%2f2017+9%3a00%3a00+AM&amp;hs_context=%7b%22hutk%22%3a%22561f2e1ae22989c634d6815f88298463%22%2c%22ipAddress%22%3a%22%3a%3a1%22%7d”</P> </BLOCKQUOTE> Wed, 03 May 2017 21:37:17 GMT 2017-05-03T21:37:17Z