Format strings, need leading zeros

[Dennis_Knutson]

Use a format string of %x for the Scan From String and a format string of %04x for the Format Into String.

[AlanSpectrumControls]

Almost, I had tried that, but my Input String contains hexidecimal characters, and changing the Format Specifier to x actually converts the DBL value to hexidecimal for the resulting Output String.  It will not handle the ABCDEF characters in the Input String.  Looks like I will need to do some converting of the Input Sting.  Thanks DK.

[Dennis_Knutson]

I'm not sure I understand the problem. I made the changes and entered a string of 'ef'. What I got out was '00EF'.

[AlanSpectrumControls]

Got it, I had only changed the Format Specifier on the format into String vi.  The Format Specifier must be changed on the scan from string as well. 

Another solution is to convert the Input String to a number with a Hexidecimal String to Number vi, and then format the resulting Numeric display as Hexidecimal, Pad with zeros on left.

Thanks