How to generate random text in each iteration in Jmeter tool

added the loop count as 10 Used randomString function to generate random string at each iteration

After 10 loops random string - example: "testabc" only generated 10 times.

What need to change if I expect 10 random Text

I have changed loop count, number of threads & so on. But the same result as random string generated as - "Testabc" for 10 loop counts