Issue in calling http service from workflow app in CF

Hello Experts,

I have created one workflow app in CF which works fine in terms of workflow API calls. But now my requirement is to call http service for which I have created one destination through which I am trying to call the service.

My issue is: when I add the destination in xs-app.json then my component.js is not getting loaded. But when I remove this destination from route in xs-app.json then my application is loading but service call gives "404 not found" error.

I have followed below URL and removed approuter from application.

https://help.sap.com/viewer/e157c391253b4ecd93647bf232d18a83/Cloud/en-US/6416241449b545469210b590f03bd107.html

Please provide your suggestion how can I make succes call to Http service.

Thanks,