Tooltip zindex problem

i have a tooltip in my diagram that has i want to set Z-index equivalent in gojs tooltip is it possible my issue
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If you want a tooltip to extend beyond the HTML DIV element of the Diagram, you will need to implement it in HTML.
https://gojs.net/latest/intro/toolTips.html#HTMLTooltips
https://gojs.net/latest/intro/HTMLInteraction.html#Tooltips

Is there an angular example/ implementation?

I don’t know why running in an Angular app would matter.