https://community.appian.com/discussions/f/integrations/6560/i-am-trying-to-follow-this-exampleI am trying to follow this example forum.appian.com/.../Connector_Functions.html where Appian is consuming data from weather API exposed by Yahoo. Getting the following error: Interface Definition: Expression evaluation error at function a!fromJson [lineen-USTelligent Community 12https://community.appian.com/thread/25811?ContentTypeID=1Wed, 23 Dec 2015 10:23:21 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:3d9e2e1d-fde4-4d34-a8e7-c2315ab33fcaishaanimCant I send CDT as post parameters? How to send this converted cdt as post parameter?<br /><div style="clear:both;"></div>https://community.appian.com/thread/25808?ContentTypeID=1Wed, 23 Dec 2015 04:31:06 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:9b388586-248a-473b-bd3c-183d691b3470sagarl511From m y understanding, you can use a!toJson function to convert cdt to json string<div style="clear:both;"></div>https://community.appian.com/thread/25794?ContentTypeID=1Tue, 22 Dec 2015 18:06:47 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:fced8d5d-3b4e-4b76-a164-d70a5c15471eishaanimThe parameters are JSON Based to send url embedded parameters? Can we send CDT as request body for REST call?<div style="clear:both;"></div>https://community.appian.com/thread/25787?ContentTypeID=1Tue, 22 Dec 2015 17:00:55 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:ffe62f56-ae15-46d6-a629-b1f2a11ee5d6PhilBThat very much depends on the format of the parameters - are they JSON-based or just query parameters? If they are the latter then follow the example below, noting how the a!httpQueryParameter() function is used: <a href="https://forum.appian.com/suite/help/7.11/Connector_Functions.html#a!httpQuery.28.29">forum.appian.com/.../Connector_Functions.html</a><div style="clear:both;"></div>https://community.appian.com/thread/25786?ContentTypeID=1Tue, 22 Dec 2015 16:46:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:788294f8-a61e-4f01-b7f4-de866a0141e5ishaanimCan you tell me how to send url embedded parameters in a Rest Call? <br />I have the following URL : https:/my/path/{id}<br />I need to pass id as a parameter from Appian.<div style="clear:both;"></div>https://community.appian.com/thread/25785?ContentTypeID=1Tue, 22 Dec 2015 15:19:05 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:d314fa03-9106-4e62-a38d-901f1d988634PhilBNo problem!<div style="clear:both;"></div>https://community.appian.com/thread/25783?ContentTypeID=1Tue, 22 Dec 2015 15:11:07 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:a00a7415-a39e-439d-b52c-2612d97b09dbishaanimokay. Thank you Phil<div style="clear:both;"></div>https://community.appian.com/thread/25781?ContentTypeID=1Tue, 22 Dec 2015 15:05:43 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:47fce179-28f4-4188-9bac-8e0fce7edde9PhilBLooks like Appian is not able to connect to the URL that&#39;s being requested - this could be due to network restrictions on your Appian instance so I&#39;d check with whoever is responsible for the Appian server.<div style="clear:both;"></div>https://community.appian.com/thread/25780?ContentTypeID=1Tue, 22 Dec 2015 15:02:03 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:4162ab6a-ef6f-415f-98f7-8cdba852cb3bishaanimCould not display interface. Please check definition and inputs.<br />Interface Definition: Not a valid component. Received: [success:false,result:,error:[code:[category:0,namespace:1,detail:0],title:Error Calling httpQuery,message:Failed to connect to <a href="https://query.yahooapis.com/v1/public/yql,detail:Connect">query.yahooapis.com/.../yql,detail:Connect</a> to query.yahooapis.com:443 [query.yahooapis.com/98.137.200.255] failed: Connection refused],@attributes:[@anyAttribute:[_dirty:false,_bannerText:,_refresh:]]]<br /><div style="clear:both;"></div>https://community.appian.com/thread/25779?ContentTypeID=1Tue, 22 Dec 2015 14:59:40 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:44d83028-5866-4e53-8a21-7ff1159b99c3PhilBAt a guess, the response you&#39;re getting does not contain an element of body. Try running the below in an expression rule and paste the result here so we can see what&#39;s wrong.<br /><br />a!httpQuery(<br /> /* Details about the Yahoo! Weather API can be found at: <a href="https://developer.yahoo.com/weather/">developer.yahoo.com/.../</a> */<br /> url: &quot;<a href="https://query.yahooapis.com/v1/public/yql">query.yahooapis.com/.../yql&quot;,</a><br /> queryParameters: {<br /> /* a!httpQuery will automatically url-encode query parameters for you, <br /> * so it&#39;s OK to include spaces in the value of a query parameter */<br /> a!httpQueryParameter(<br /> name: &quot;q&quot;,<br /> value: &quot;select * from weather.forecast where woeid = 2514815&quot;<br /> ),<br /> a!httpQueryParameter(<br /> name: &quot;format&quot;,<br /> value: &quot;json&quot;<br /> ),<br /> a!httpQueryParameter(<br /> name: &quot;env&quot;,<br /> value: &quot;store&quot;<br /> )<br /> }<br />)<div style="clear:both;"></div>