I can't increace speed!

[LN-KMM 7]

Hello!I am on my way from VHHH to EKCH now, but when I try to increace the speed using the FMC i get the message "Invalid entry" ! I go yo VNAV and enter it in ECON SPD! Isn't this correct.... ?EDIT: Ok. I have found out that I can enter indicated airspeed, but not Mach! I need helP!Best regards Karl Mathias Moberg

[LN-KMM 7]

Nbody knows?!?!:-(

[chiswick72 145]

Karl,Just enter .86 for Mach number entry.

[LN-KMM 7]

I have tried! But I get the error message "Invalid entry" !!!:-mad

[744pilot 0]

Are you sure you enter a "." before the 86??

[LN-KMM 7]

YES! I enter .86, but I still get the same error message..!

[Guest Robin.B]

Tried entering 0.86?

[chiswick72 145]

Hi Karl,Please provide us with a screen shot of your FMC and where you are trying to enter the Mach number.Best regards,