Build is showing successful in failure of one test case.. wh

Hi team,

Can you please tell me, What changes should be done in ANT script(running ABL Unit test case) to see the Build Failed. In every case, I am getting Build Successful even failure of one test case which is written in ABL Unit. ANt Script is -.

<target name="ablunit" depends="init,taskdef,compile" description="run unit tests">
<mkdir dir="results"/>
<ablunit dlc="${DLC_HOME}" environment="gui" printsummary="true" haltonerror="no" haltonfailure="no" tempdir="c:\shilpi\POC\ablunit">
<batchtest todir="results">
<fileset dir="tests" includes="**/*.p" >
</fileset>
</batchtest>

<dbinfo name="c:\rishi\test\data\autodb.db" port="4500"/>
<propath>
<pathelement path="c:\shilpi\POC\ablunit\tests" />
<pathelement location="${DLC_HOME}\gui\ablunit.pl" />
<pathelement location="${DLC_HOME}\gui\OpenEdge.Core.pl" />
</propath>

</ablunit>
<echo message="Run Test cases" />
</target>

output is-

Buildfile: C:\shilpi\POC\ablunit\build.xml
init:
taskdef:
prepare:
[echo] Directory created
clean:
[echo] clean done
compile:
[PCTCompile] PCTCompile - Progress Code Compiler
[PCTCompile] 11 file(s) compiled
[echo] Build process
ablunit:
[ablunit] Running C:\shilpi\POC\ablunit\tests\testDelcust.p
[ablunit] Tests run: 0, Success: 0, Errors: 0, Failures: 0, Time elapsed: 0.001 sec
[echo] Run Test cases
BUILD SUCCESSFUL
Total time: 10 seconds

When I run the test case(testDelcust.p) through Progress ABL Unit Application, i am finding one failure. But when I run this testcase through ANT script, Build comes out successful..

Is there need to change in ANT script? What changes should be done?

Please suggest.