Hi @HikmatUllaH 

It seems its a JSON parsing issue.

Can you try with it .

(function execute(inputs, outputs) {
var parser = new JSON();
var responseObj = parser.decode(inputs.parameter);
if (responseObj.step_input_status_code == '200') {
gs.debug("Json parsed response by hikmat:" + responseObj.step_input_response_body);
outputs.step_output_question = responseObj.result.question;
outputs.step_output_category = responseObj.result.category;
outputs.step_output_difficulty = responseObj.result.difficulty;
outputs.step_output_id = responseObj.result.sys_id;
}
})(inputs, outputs);