Need Assistance with Gradle Dependencies in IntelliJ IDEA

Hello IntelliJ IDEA Hub Support,

I hope this message finds you well. I am an absolute beginner working on a project that involves customizing LWJGL and importing Gradle libraries. I have encountered an issue with my build.gradle.kts file, where the lwjglVersion, jomlVersion, and lwjglNatives variables are all highlighted in red. The project was set up with JDK 19, and I selected Gradle as the build tool during project creation in IntelliJ IDEA, using what I believe is the latest version of Gradle, given that I am using the latest version of IntelliJ IDEA.

Here is a snippet of my build.gradle.kts file:

plugins {
   id("java-library")
}

group = "org.example"
version = "1.0-SNAPSHOT"

dependencies {
   testImplementation(platform("org.junit:junit-bom:5.9.1"))
   testImplementation("org.junit.jupiter:junit-jupiter")
}

tasks.test {
   useJUnitPlatform()
}

project.ext.lwjglVersion = "3.3.3"
project.ext.jomlVersion = "1.10.5"
project.ext.lwjglNatives = "natives-macos-arm64"

repositories {
   mavenCentral()
}

dependencies {
   implementation(platform("org.lwjgl:lwjgl-bom:${project.ext.lwjglVersion}"))

   implementation("org.lwjgl:lwjgl")
   implementation("org.lwjgl:lwjgl-assimp")
   implementation("org.lwjgl:lwjgl-glfw")
   implementation("org.lwjgl:lwjgl-nfd")
   implementation("org.lwjgl:lwjgl-openal")
   implementation("org.lwjgl:lwjgl-opengl")
   implementation("org.lwjgl:lwjgl-stb")
   runtimeOnly("org.lwjgl:lwjgl::$lwjglNatives")
   runtimeOnly("org.lwjgl:lwjgl-assimp::$lwjglNatives")
   runtimeOnly("org.lwjgl:lwjgl-glfw::$lwjglNatives")
   runtimeOnly("org.lwjgl:lwjgl-nfd::$lwjglNatives")
   runtimeOnly("org.lwjgl:lwjgl-openal::$lwjglNatives")
   runtimeOnly("org.lwjgl:lwjgl-opengl::$lwjglNatives")
   runtimeOnly("org.lwjgl:lwjgl-stb::$lwjglNatives")
   implementation("org.joml:joml:${project.ext.jomlVersion}")
}
 

I would greatly appreciate any guidance on resolving this issue. As a beginner, I'm eager to learn and improve my skills.

Thank you for your time and assistance.