Does that y value of 371646 actually correspond to 103:14:06 (hours:minutes:seconds) ?
If so, can you assign a time10. format to the y variable?
Note that this blog
https://blogs.sas.com/content/sgf/2016/03/22/making-best-use-of-date-formats-in-visual-analytics-designer/
shows using and "elapsed time" role and a time8. format. I suspect you may need more of a time10. OR a custom format. But if the value is actually seconds no transform or applied function should be needed.
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