Oh right, so 1/10 you'll hit the multiplier and that can be from 1-10 too?

not sure if i understand now, but this is from PS.com page:

1. Select a game and preferred outcome
e.g. Arsenal v Chelsea, Match Result - Arsenal

2. Enter your bet amount (£/$/€1-100)
Ten percent (10%) from every Spin & Bet amount will go into a Jackpot contribution, which will be distributed between customers who receive enhanced odds.
e.g. 10.00 –> 9.00 stake, 1.00 jackpot contribution

3. Spin for a chance to enhance the odds
You will either receive the original price offered (x1) or up to 10 times the profit on your selection. You could get up to 90/1 on your team to win.

Spin Factor Probability
1 80%
1.5 10%
2 8.5%
5 1%
10 0.5%

How we calculate enhanced odds

Odds: 5/1 (fractional), 6.00 (decimal)
Spin factor: 10

1. Odds in fractional format (5/1) contain the profit only.

To enhance fractional odds, we multiply the odds (profit) by the spin factor:

Fractional Odds x Spin Factor = Enhanced Fractional Odds
5/1 x 10 = 50/1

2. Odds in decimal format (6.00) contain the unit stake (1.00) and the profit (5.00).

To enhance decimal odds, we remove the unit stake, multiply the profit part by the spin factor, and then add the unit stake back:

(Decimal Odds – Unit Stake) x Spin Factor) + Unit Stake = Enhanced Decimal Odds
((6.00 – 1) x 10) +1 = (5.00 x 10) +1 = 50.00 + 1 = 51.00