I am trying to write a tool whose input and output types are defined from an option selected by the user.<div><br></div><div>The first input is defined from a select list using a loc file - no probs</div><div><div>      &lt;param name=&quot;source_select&quot; type=&quot;select&quot; label=&quot;Option 1&quot;&gt;</div>
<div>                  &lt;options from_file=&quot;tool_indices.loc&quot;&gt;</div><div>                        &lt;column name=&quot;name&quot; index=&quot;0&quot;/&gt;</div><div>                        &lt;column name=&quot;value&quot; index=&quot;1&quot;/&gt;</div>
<div>                        &lt;column name=&quot;inputType&quot; index=&quot;2&quot;/&gt;</div><div>                        &lt;column name=&quot;outType&quot; index=&quot;3&quot;/&gt;</div><div>                  &lt;/options&gt;</div>
<div>      &lt;/param&gt;</div><div><br></div><div>Based on the selection I want to define the allowed input types (above in column 3) and specify the output type (above in column 4). </div><div><br></div><div>Are the values of the select columns available for use in conditionals/change_format operations? If not, how can I get around it? What other methods of attack are there for the problem.</div>
<div><br></div><div><br></div><div>On a related issue, if th user specifies their input file, can i access the metadata for its type and filter the select list based on the input file?</div><div><br></div><div>Cheers</div>
<div>Dennis</div>
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