json - Unable to run selenium scripts using selblock -

i using selenium ide 'selblock' plugin(v 2.1) tried forjson command in selenium ide.

following code snippet selenium ide:

<tr>     <td>forjson</td>     <td>file://login.json</td>     <td></td> </tr> <tr>     <td>open</td>     <td>http://login.realvolvebeta.com/users/sign_in</td>     <td></td> </tr> <tr>     <td>type</td>     <td>id=user_email</td>     <td>${id}</td> </tr> <tr>     <td>type</td>     <td>id=user_password</td>     <td>${password}</td> </tr> <tr>     <td>endforjson</td>     <td></td>     <td></td> </tr> <tr>     <td>clickandwait</td>     <td>name=commit</td>     <td></td> </tr> <tr>     <td></td>     <td></td>     <td></td> </tr>  </tbody></table> 

i following error:

[error] unexpected exception: syntaxerror: missing ; before statement. stack -> @chrome://selblocksseleexten/content/extensions/selblocks.js?1431067892568:1486 @chrome://selblocksseleexten/content/extensions/data-reader.js?1431067892570:118 @chrome://selblocksseleexten/content/extensions/selblocks.js?1431067892568:1156 enterloop@chrome://selblocksseleexten/content/extensions/selblocks.js?1431067892568:1209 @chrome://selblocksseleexten/content/extensions/selblocks.js?1431067892568:1165 fnbind/retval@chrome://selenium-ide/content/selenium-core/scripts/htmlutils.js:60 actionhandler.prototype.execute@chrome://selenium-ide/content/selenium-core/scripts/selenium-commandhandlers.js:314 ._executecurrentcommand@chrome://selenium-ide/content/selenium-runner.js:306 testloop.prototype.resume@chrome://selenium-ide/content/selenium-core/scripts/selenium-executionloop.js:78 fnbind/retval@chrome://selenium-ide/content/selenium-core/scripts/htmlutils.js:60 , filename -> chrome://selblocksseleexten/content/extensions/selblocks.js?1431067892568, linenumber -> 1486, columnnumber -> 22