Cypress: Assign and access global variable in cypress - cypress

Question

I'm new with cypress, I tried to set several global variables to use for different purposes. However, the scope of those variables are different even they are declared as global. My expectation is output 3: 0 and 4 and 1, how could I do that? Thanks everyone, my code as below:
var totalCouponCredit = []
var arrayGameCredit = []
var totalSelectedCredit, userUsedCredit, gameCredit
describe ('Testing',function(){
it('Login',function(){
cy.get('div.row.flex-lg-column.h-100>div:nth-of-type(1)>div>div>h6').then(($selectedCredit)=>{
//This is the string return "SELECTED CREDITS 0/4", userUsedCredit is 0 and totalSelectedCredit is 4 after split
totalCouponCredit = $selectedCredit.text().match(/[a-zA-Z]+|[0-9]+(?:\.[0-9]+|)/g)
userUsedCredit = parseInt(totalCouponCredit[2])
totalSelectedCredit = parseInt(totalCouponCredit[3])
cy.get('div.col>p:nth-of-type(1)>span>span').then(($gameCredit)=>{
//This is the string return "This title is worth 1 credit(s)", gameCredit is 1 after split
arrayGameCredit = $gameCredit.text().match(/[a-zA-Z]+|[0-9]+(?:\.[0-9]+|)/g)
gameCredit = parseInt(arrayGameCredit[4])
cy.log("Out put 1:" + userUsedCredit + " and " + totalSelectedCredit + " and " +gameCredit)
})
cy.log("Out put 2:" + userUsedCredit + " and " + totalSelectedCredit + " and " +gameCredit)
})
cy.log("Out put 3:" + userUsedCredit + " and " + totalSelectedCredit + " and " +gameCredit)
})
})
OUTPUT:
Output 1: 0 and 4 and 1
Output 2: 0 and 4 and undefined
Output 3: undefined and undefined and undefined