Don't worry, this forum is dedicated to Power Up program students (I think).
1-From your screenshots I couldn't find the text input control and its name also need to change to txtSearch
2-txtSearch.Text for classic text input control
txtSearch.Value for modern text input control
Search(Loans,txtSearch.Text,StudentFullName)
3-The formula expression is case-sensitive. Use Intellisense instead of typing the full text.
Intellisense suggestions:
Use the arrow keys to navigate through the suggestions and press Tab to select and insert the highlighted suggestion.
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