Tapered Stroke option for shape layer is not show in my after effect 2020 and 2019 version

[#1]

I try to create heart rate pulse but when I try to taper the stroke of shape layer I goto>content>shape 1>stroke 1>here in stroke 1 no option for taper stoke 

when I search on google for my problem solution then google give me suggested video wherein these videos I see they have 2020 version of after effect and taper option is still here and working but I also have 2020 version of after effect but no taper option.

anyone help me if he knows what type of trouble.

[#2]

I try to create heart rate pulse but when I try to taper the stroke of shape layer I goto>content>shape 1>stroke 1>here in stroke 1 no option for taper stoke 

when I search on google for my problem solution then google give me suggested video wherein these videos I see they have 2020 version of after effect and taper option is still here and working but I also have 2020 version of after effect but no taper option.

anyone help me if he knows what type of trouble.

[#3]

This is a very new feature and I think it is only available in the Public Beta, so far.

Look for it in the "Beta Apps" section of the Creative Cloud Desktop App.

[#4]

It's right there in the latest build of AE 2020. Just press the U key twice, then spin down the Stroke Options

You can also find it by typing tap in the Timeline search field and then spin down the options.