Macro Syntax Error?

This is my macro but there is a syntax error somewhere in the code. This is what I have

Do

Range("purchase").Value = InputBox("Enter the purchase value of your bonds between the values of 0 and 1,000,000"

Loop Until Range("purchase").Value <= 1000000 And Range("purchase").Value >= 0

I'm trying to write a macro that has purchase price greater than 0 and less than or equal to 1,000,000.

module1. purchase is my attempt at a macro, go to Visual Basic.

Any help is appreciated.

here is the code

[Range("purchase").Value = InputBox("Enter the purchase value of your bonds between the values of 0 and 1,000,000 (do not enter commas)"
Loop Until Range("purchase").Value <= 1000000 And Range("purchase").Value >= 0]