Calculate cummulative value until condition

I have solved the issue, but it is more static than I would like it to be. I still have two problems:

Sum X Quarters = 
VAR xQuarters = SELECTEDVALUE('Claim Development Quarters'[Claim Development])
VAR xDates = SELECTEDVALUE('Claim Occured Date'[Claim Occured Date])
VAR Result =
    CALCULATE(
        [Total claims],
        Triangle[TIME_UNITS_DELAY] <= xQuarters,
        Triangle[TIME_CLAIM_OCCURED] = xDates
    )
RETURN
    IF(xDates + ((xQuarters + 1) * 90 ) < DATE(2022,6,30) , Result, 0)

I would like to add the number of quarters more dinamically (or correctly), replacing the expression:

((xQuarters + 1) * 90 )

And would like to have the MAX date instead of:

DATE(2022,6,30)

If I replace this expression with:

MAX('Claim Development Quarters'[Claim Development])

This happens:

I tried the FORMAT, but received no good results. Probably also due to my missunderstanding. The end result with 'static' code looks like: