Can someone try this flow to see if the following plot is generated without the straight line

[Colin]

All I can do is repeat exactly the answer I gave the last time you asked about this, at which time you marked this answer as the solution.

@Colin

the problem is clear. You can see that the first item in the array has x as a string containing " 1" whereas it should be the timestamp either in javascript ticks (msec) or as an ISO date string.