Problems with IMAQ Histrograph.vi

[abraham.oash]

Hi, I'm using this vi to determine the histogram of an image, the source of this images is my webcam and I'm using a Express vi Vision Acquisition(Continuos acqusistion with inline processing)... the proble is that when I run the program, it says 

"Error -1074396080 occurred at IMAQ Histograph"

"Possible reason(s):

IMAQ Vision: Invalid image type."

[AdnanZ]

The image that is returned from the Vision Acquisition Express VI is a 32-bit RGB image. The IMAQ Histograph only accepts grayscale images (Open the Context Help (Ctrl + H) window and click on Detailed Help. Under Examples it should tell you what image type it accepts).

You might be better off using the IMAQ ColorHistograph.vi