Advance script and Limitmode

Hi I have a Powershelscript that monitor a SAN system. A portion of the XML output, seen here .:

<result>
<channel>
Unfixed errors in the system
</channel>
<value>
2
</value>
<Down>
1
</Down>
<LimitMinError>1</LimitMinError>
<LimitMode>1</LimitMode>
<LimitErrorMsg>
TEST ERROR besked
</LimitErrorMsg>
</result>

My problem is that I would like to have defined DOWN message when the value is 2 or higher than 0. I have also tried with

<Warning>
         1
</ Warning>

Instead of <Down>, in my script. When set to Warning, then comes the script fine with a warning, but the channel is still green. In PRTG is this channel value shown correctly, like 2.

How can I best define a DOWN message in my script.?

down exexml limits