How to pick up only one/unique item/value from DB to Excel

I use following code to read DB table to Excel worksheet:

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This works OK, but I need to find certain value from the DB and write that value to a specific cell. I know how to create SQL string to get that value but I don't know how to write it to a cell. I modified the code a bit:

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but this doesn't work, it writes DB column name to that cell and results an error at some point. Any ideas?