Groovy parameter to shell script - shell

Question

I've been trying to separate my code into two different files: callTheFunction.groovy and theFunction.groovy.
As you can see from the name of the file:
callTheFunction.groovy calls the function defined in theFunction.groovy, passing random values in as parameters.
theFunction is a shell script - inside groovy function - which is supposed to use the parameters passed from callTheFunction.
PROBLEM:
The shell script does not recognize/understand the arguments, the variables are empty, no value.
theFunction.groovy
def call(var1, var2) {
sh '''
echo "MY values $var1 and $var2"
'''
}
callTheFunction.groovy
def call {
pipeline {
stages {
stage ('myscript') {
steps {
theFunction("Value1", "Value2")
}
}
}
}
}
OUTPUT FROM PIPELINE:
MY values and
I am aware that there are similar issues out there:
Pass groovy variable to shell script
How to assign groovy variable to shell variable

Answer 1

UPDATES
You can use environment variable without having environment {}
Use environment variables like the ones i have used here (i refactored your code a little bit). Using triple single quotes for shell script for loop and adding grrovy variable to it:
def callfunc() {
sh '''
export s="key"
echo $s
for i in $VARENV1
do
echo "Looping ... i is set to $i"
done
'''
}
pipeline {
agent { label 'agent_1' }
stages {
stage ('Run script') {
steps {
script {
env.VARENV1 = "Peace"
}
callfunc()
}
}
}
}
OUTPUT:
Reference:
Jenkins - Passing parameter to groovy function