**Tell us what’s happening:**

Can anyone help me with this challenge?

I am using the prepareGreenTea function as the first parameter in the getTea function, and am doing the same for the second getTea function.

The error I get is, ‘prepare tea is not a function.’

I have used green and black tea functions respectively, to store their values.

**Your code so far**

```
/**
* A long process to prepare green tea.
* @return {string} A cup of green tea.
**/
const prepareGreenTea = () => 'greenTea';
/**
* A long process to prepare black tea.
* @return {string} A cup of black tea.
**/
const prepareBlackTea = () => 'blackTea';
/**
* Get given number of cups of tea.
* @param {function():string} prepareTea The type of tea preparing function.
* @param {number} numOfCups Number of required cups of tea.
* @return {Array<string>} Given amount of tea cups.
**/
const getTea = (prepareTea, numOfCups) => {
const teaCups = [];
for(let cups = 1; cups <= numOfCups; cups += 1) {
const teaCup = prepareTea();
teaCups.push(teaCup);
}
return teaCups;
};
// Add your code below this line
const tea4GreenTeamFCC = getTea(prepareGreenTea(),27); // :(
const tea4BlackTeamFCC = getTea(prepareBlackTea(),13); // :(
// Add your code above this line
console.log(
tea4GreenTeamFCC,
tea4BlackTeamFCC
);
```

**Your browser information:**

User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.84 Safari/537.36`

.

**Link to the challenge:**

https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/functional-programming/understand-functional-programming-terminology