MSDN told this!!!

Displays a user-defined dialog box.

MESSAGEBOX(eMessageText [, cTitleBarText][, nDialogBoxType ][, nTimeout])

nTimeout
Specifies the number of milliseconds Visual FoxPro displays cMessageText without input from the keyboard or the mouse before clearing cMessageText. Any valid timeout can be specified. A value of less than 1 will never timeout until user input (same as without the nTimeout parameter). When a timeout occurs, MESSAGEBOX( ) returns –1.


when i tried to use parameter timeout,
sample : MESSAGEBOX("HELLO",36,"MyTitle",10)

i got the following error message:
too many arguments

i use VFP 6.0

thanks for any helps!!!
Martin