[galaxy-dev] output data filter

[Bram Slabbinck]

Hi

I'm having an internal data source that is connected to Galaxy (version: 
second last distribution) through the data connection protocol. I have 
some parameters returned from my data source website which are parsed 
with a parameter request translation. Everything works fine except for 
establishing variable static output data 
(https://bitbucket.org/galaxy/galaxy-central/wiki/ToolsMultipleOutput). 
I want to label my output data set according to a parameter value that 
is returned from my data source website. How can I use this parameter as 
a filter because the following statement does not work:

<request_param_translation>
<request_param galaxy_name="dummy" remote_name="output" missing="test" />

<outputs>
<data name="output" label="labelX">
<filter>$dummy  == "valueX" </filter>
</data>
<data name="output" label="labelY">
<filter>$dummy != "valueX" </filter>
</data>
</outputs>

I have also tried without the dollar character (dummy = "valueX") as 
stated in the link above but this gives a TypeError in the log. Using 
$dummy.value==valueX does not work either.
If I print the Galaxy variables by Cheetah code ( #silent 
sys.stderr.write(" searchList = '%s'\n" % (str($searchList))) ), the 
parameter dummy is created. So, how can I use this type of parameter as 
a filter?

thx for any suggestion
regards
Bram