How to get value which stored inside globalvariable list inside profile

Hi, I am newbie using katalon

I have tried using globalvariable type list and insert value into globalvariable list, but when tried to call the value it just displayed the first character of string, and also if I recall this method everytime its look like the replace the previous value. How to make it keep store value until test case finish and call the cotent correctly?

this are my codes

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