Do a search for should deliver list of text but somehow deliveres a text

Hi guys,

i want to show data using the Simple Line Chart APEX Chart Plugin. There for the x-axis it needs a list of text but somehow i dont get how to do so. When i try to convert the timestamp to a text the error is “it delivers a text but should be a list of text”

Anyone knows where the issue is?

Bildschirmfoto 2023-05-30 um 22.16.24
this doesnt work either

Add “split by” at the end of the expression. Make the “Text separator” the same as the “Delimiter” from the “Format as text” function.

Here’s an example of how it should look:

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