diff --git a/src/core/components/param-body.jsx b/src/core/components/param-body.jsx
index 20de5dc7..31c0ea68 100644
--- a/src/core/components/param-body.jsx
+++ b/src/core/components/param-body.jsx
@@ -47,10 +47,9 @@ export default class ParamBody extends PureComponent {
 
   updateValues = (props) => {
     let { specSelectors, pathMethod, param, isExecute, consumesValue="" } = props
-    let parameter = (specSelectors ? specSelectors.parameterWithMetaByIdentity(pathMethod, param) : fromJS({})) || param
     let isXml = /xml/i.test(consumesValue)
     let isJson = /json/i.test(consumesValue)
-    let paramValue = isXml ? parameter.get("value_xml") : parameter.get("value")
+    let paramValue = isXml ? param.get("value_xml") : param.get("value")
 
     if ( paramValue !== undefined ) {
       let val = !paramValue && isJson ? "{}" : paramValue
@@ -79,7 +78,7 @@ export default class ParamBody extends PureComponent {
     this._onChange(value, isXml)
   }
 
-  _onChange = (val, isXml) => { (this.props.onChange || NOOP)(this.props.param, val, isXml) }
+  _onChange = (val, isXml) => { (this.props.onChange || NOOP)(val, isXml) }
 
   handleOnChange = e => {
     const {consumesValue} = this.props
diff --git a/src/core/components/parameter-row.jsx b/src/core/components/parameter-row.jsx
index fe3f9efd..50116db6 100644
--- a/src/core/components/parameter-row.jsx
+++ b/src/core/components/parameter-row.jsx
@@ -9,6 +9,7 @@ export default class ParameterRow extends Component {
   static propTypes = {
     onChange: PropTypes.func.isRequired,
     param: PropTypes.object.isRequired,
+    rawParam: PropTypes.object.isRequired,
     getComponent: PropTypes.func.isRequired,
     fn: PropTypes.object.isRequired,
     isExecute: PropTypes.bool,
@@ -56,9 +57,9 @@ export default class ParameterRow extends Component {
     }
   }
 
-  onChangeWrapper = (value) => {
-    let { onChange, param } = this.props
-    return onChange(param, value)
+  onChangeWrapper = (value, isXml) => {
+    let { onChange, rawParam } = this.props
+    return onChange(rawParam, value, isXml)
   }
 
   setDefaultValue = () => {
@@ -101,7 +102,7 @@ export default class ParameterRow extends Component {
                    param={param}
                    consumes={ specSelectors.operationConsumes(pathMethod) }
                    consumesValue={ specSelectors.contentTypeValues(pathMethod).get("requestContentType") }
-                   onChange={onChange}
+                   onChange={this.onChangeWrapper}
                    onChangeConsumes={onChangeConsumes}
                    isExecute={ isExecute }
                    specSelectors={ specSelectors }
diff --git a/src/core/components/parameters.jsx b/src/core/components/parameters.jsx
index fa77c4f5..e5ce323b 100644
--- a/src/core/components/parameters.jsx
+++ b/src/core/components/parameters.jsx
@@ -101,6 +101,7 @@ export default class Parameters extends Component {
                       specPath={specPath.push(i.toString())}
                       getComponent={ getComponent }
                       getConfigs={ getConfigs }
+                      rawParam={ parameter }
                       param={ specSelectors.parameterWithMetaByIdentity(pathMethod, parameter) }
                       key={ `${parameter.get( "in" )}.${parameter.get("name")}` }
                       onChange={ this.onChange }