Insert data into a f(t) trend

Hi.

Currently I am able to script XY trends to plot my own values using the insertdata method of a trend object when the data source is user defined.

Right now I am trying to do this on a trend with a time axis and failing to get this to work.  I have attempted using CDATE() method for writing a date time onto the array that I am writing to this trend.  I am not getting errors but unable to see any custom data.

Here is an example of a test script I am doing.  I would think something similar would work or user define data source wouldn't be an option.

Dim chart
Set chart = HMIRuntime.Screens("Screen_1").ScreenItems("testtrend")

Dim trend
Set trend = chart.GetTrend("Trend_3")

Dim arrayX(2)
Dim arrayY(2)

arrayX(0) = CDate("2021-4-13 20:00")
arrayX(1) = Now()


arrayY(0) = 50
arrayY(1) = 80


trend.InsertData arrayX, arrayY