How to set value of a form control which is inside a form array in Angular reactive form

I've a reactive form:

this.leDetailsUpdateForm = new FormGroup({
entityNameArray: new FormArray([
new FormGroup({
id: new FormControl(),
entityName: new FormControl(),
entityNameStartDate: new FormControl(), // <----- this i want to set
entityNameEndDate: new FormControl(),
entityNameStatus: new FormControl(),
status: new FormControl(),
}),
]),
})


I'm trying to set it after some calculations as follows :

setStartDates(e: any) {
console.log(e);
this.leDetailsUpdateForm.get('entityNameArray').get('entityNameStartDate').setValue(e)
}


I'm not getting the required syntax on google. Please help.

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