DSSAT translator issue with wst_id

[DavidKelly-Praedictus]

What is the proper format for wst_id?

The agmip master variable table lists it as a number, but in the example agmip translation data at https://github.com/agmip/json-translation-samples/blob/master/Sugercane_UFBG0701SC/UFBG0701SC.json, wst_id is a string "UFBG". And when I run QuadUI with a wst_id containing both characters and integers (like 'GENERIC1'), it causes a ClassCastException:

14:09:49.665 ERROR o.a.t.dssat.DssatControllerOutput - java.util.concurrent.ExecutionException: java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.String
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:188)
at org.agmip.translators.dssat.DssatControllerOutput.writeFile(DssatControllerOutput.java:247)
at org.agmip.ui.quadui.TranslateRunner.run(TranslateRunner.java:59)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.String
at org.agmip.translators.dssat.DssatCommonOutput.formatNumStr(DssatCommonOutput.java:78)
at org.agmip.translators.dssat.DssatWeatherOutput.writeFile(DssatWeatherOutput.java:90)
at org.agmip.translators.dssat.DssatTranslateRunner.call(DssatTranslateRunner.java:44)
at org.agmip.translators.dssat.DssatTranslateRunner.call(DssatTranslateRunner.java:17)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
... 3 more