Not able to deploy bar file using Ant - ant

Question

I am getting an error when I am trying to execute the below piece of code:
<target depends="" description="Deploys to the selected MQSI broker." name="MQSI-cvs-deploy-broker_QA">
<echo message="Deploying to MQSI broker using broker.properties file..."/>
<echo/>
<echo message="Broker: ${release.broker.name}"/>
<echo/>
<property file="${release.working.dir}/${product.code}/broker.properties"/>
<echo message ="${release.working.dir}/${product.code}/broker.properties"/>
<propertycopy name="release.execgroup.names" from="${environment.code}.execgroup.names"/>
<foreach list="${release.execgroup.names}" inheritall="true" target="MQSI-cvs-deploy-execgroup_QA" param="release.execgroup.name"/>
</target>
<!-- This target deploys to the MQSI execution group(s) selected in cvs-deploy-broker-MQSI -->
<target depends="" description="Deploys to the selected MQSI execution groups." name="MQSI-cvs-deploy-execgroup_QA">
<echo message="Deploying to MQSI broker's execution group..."/>
<echo/>
<echo message="Execgroup: ${release.execgroup.name}"/>
<inputstring username="${mqsiqa.server.deploy.username}" password="${mqsiqa.server.deploy.password}" host="10.202.79.36" verifyhost="false" >
</inputstring>
<exec dir="C:\Program Files\IBM\MQSI\9.0.0.3\bin" executable="cmd.exe" failonerror="true">
<arg line="mqsideploy"/>
<arg value="-n" />
<arg value="${release.broker.name}" />
<arg value="-e" />
<arg value="${release.execgroup.name}" />
<arg value="-a" />
<arg value="${release.bar.file}" />
<arg value="-w" />
<arg value="90" />
</exec>
</target>
This is the error message:
BUILD FAILED
D:\Build\Build.2.0\antDeploy.xml:356: The following error occurred while executing this line:
D:\Build\Build.2.0\antDeploy.xml:364: Problem: failed to create task or type inputstring
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.
Where I am going wrong?