Schedule API workflow on a list- Unix time conversion

Hi ,

I am fetching unix time & price data to display in a chart. To do so, first we fetch the data from external API upon a user action & save it to database. Then run schedule workflow on a list with a unix time converter plugin passing unix timestamps for conversion to dates in regular format. Workflow screens and backend api given below along with the log.

The log doesn’t show any error & neither any data for conversion of unix to dates.

Can anyone tell what am i missing here?