Thanks for update , But I need to pass integer as a parameter as its the only data supported by the service but the method defined is only supporting string.
TestObjectProperty(java.lang.String, com.kms.katalon.core.testobject.ConditionType, java.lang.String)
And I am trying to insert parameter using given below code snippet and getting exception from the REST service which is expected .I need same method but only difference is instead of string param value it can accept integer .Or work around of it .
req.getRestParameters().add(new TestObjectProperty(java.lang.String, com.kms.katalon.core.testobject.ConditionType, java.lang.String)))