diff --git a/components/tpx-bluetooth-print/print/tanexPrinterUniSdk.js b/components/tpx-bluetooth-print/print/tanexPrinterUniSdk.js
index 6c78dc9..c34b378 100644
--- a/components/tpx-bluetooth-print/print/tanexPrinterUniSdk.js
+++ b/components/tpx-bluetooth-print/print/tanexPrinterUniSdk.js
@@ -64,7 +64,7 @@ var tanexPrinter = {
 			var width = parseInt((res.width + 7) / 8 * 8 / 8)
 			var height = res.height;
 			// console.log(width + "--" + height)
-			data = "CG " + width + " " + height + " " + x + " " + y + " "
+			data = `CG ${width} ${height} ${x} ${y} `
 			tanexPrinter.addCommand(data) 
 			// console.log(command)
 			var r = []