Price rule not working

[Nortski]

I have created a price rule using GraphQL but nothing seems to be happening. I received no errors when I created it but the rule doesn't seem to getting applied.
Basically, when a specific product has more than 9 in the cart then £1.00 should be deducted from each item:

mutation priceRuleCreate($priceRule: PriceRuleInput!, $priceRuleDiscountCode: PriceRuleDiscountCodeInput) {
    priceRuleCreate(priceRule: $priceRule, priceRuleDiscountCode: $priceRuleDiscountCode) {
      priceRuleUserErrors { field, message, code }
      priceRule {
        id,
        title
      }
      priceRuleDiscountCode {
        id
        code
      }
    }
  }

Variables:

{
  "priceRule": {
  	"title": "price rule 1",
    "allocationMethod": "EACH",
    "customerSelection": {
        "forAllCustomers": true
    },
    "itemEntitlements": {
    "targetAllLineItems": false,
    "productIds": [
      "gid://shopify/Product/6804610678877"
    ]
   },
  "prerequisiteQuantityRange": {
    "greaterThan": 9
  },
  "target": "LINE_ITEM",
  "validityPeriod": {
    "start": "2022-05-26T08:00:00-04:00"
   },
  "value": {
    "fixedAmountValue": "-1.00"
  } 
}
}