ngmodel with null value on select

[coarse lava]

https://stackblitz.com/edit/angular-yg63y2nf?file=src%2Fmain.ts,src%2Fapp%2Ffeatures%2Fpollutant%2Fc
PollutantsSelect at line 32

I use a select with an ngModel

the select must be initialized with a subject but I have a problem with handling the null.

[stiff kiln]

https://stackblitz.com/edit/angular-yg63y2nf?file=src%2Fapp%2Ffeatures%2Fpollutant%2Fcomponents%2Fpollutants-select%2Fpollutants-select.ts

?? null will be a ble to handle falsy0.

this._storePollutant.getPollutantSelectedValue()?.id ?? null;

[coarse lava]

great, thanks....