Uistring error setProperty

CS Principles Coding and Debugging Help
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I have students working on their Unit 5 Hackathon Project and we are constantly running into this error and nothing will work - WARNING: Line: 61: setProperty() value parameter value (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50) is not a uistring. WARNING: Line: 62: setProperty() value parameter value (undefined) is not a uistring. WARNING: Line: 63: setProperty() value parameter value (undefined) is not a uistring.*

They have modeled it like previous projects and can’t get it to work
Here is their project to look at.

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Remove the square brackets in your list declaration statements at the top. For example,
var usaRank = (getColumn("Top 50 USA", "Position"));
instead of
var usaRank = [(getColumn("Top 50 USA", "Position"))];

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