Error VLOOKUP in Offfice scripts

When I put the formula "VLOOKUP(A1;F1:G1;2;FALSE)" in an Excel Script (see below) I have got the error "

Line 4: Range setFormulaLocal: The argument is invalid, missing, or incorrectly formatted.

My Excel Script is:

function main(workbook: ExcelScript.Workbook) {
	let selectedSheet = workbook.getActiveWorksheet();
	// Set range B1 on selectedSheet
	selectedSheet.getRange("B1").setFormulaLocal("=VLOOKUP(A1,$F$1:$G$1,2,FALSE)");
}