Can't begin evasion

[aldi.bano]

select army, choose evasion time, press begin evasion. then nothing happens.

can some one help me?

[grmarf]

You just need to select the troops before to select the duration.
If you select duration before the troops, evasion can't work. Without error message.

EDIT : 10 troops of each minimum.

[aldi.bano]

Thank you for your help.

The problem was: should not select less than 10 troops