There is a workaround to this in the Action Chains plugin. The chain to run you program is attached to this post. (Action chains > add/modify chains > import).
You will need to edit the template in the first action (Copy To Clipboard) to replace the "#my_int_col" with your custom column name.
The attached chain constructs a temporary shell script containing the appropriate command, and then runs it.
Next version of the plugin will allow using template for command arguments.
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