There are a few issues with your files.
- The you need to remove the curly brackets. Wikipedia provides a good explanation on the format.
Well-known text representation of geometry - Wikipedia - The coordinates need to be lat/lon WGS84. I think you provide UTM coordinates.
- The ROIs need to be named differently. Currently both are nemd ‘geoRegion’. Name them roi1, roi2 and so on.
- If you only want to use one command line call, without a script, you need to add multiple subset nodes to the XML. One for each ROI.
- In the xml you can then use the rois from the properties file like this
<geoRegion>${roi1}</geoRegion>
- You also need to add additional Idepix and Write nodes.
Here I did something similar: Split product bandwise into single GeoTiff files - GPF Graphs - STEP Forum (esa.int)