1054 - Integer '%s' must be in range %u to %u.
Description
    
An integer property of a Function was set out of range.
    
Example
    
Config:
    Unity( 'name' )
{
    .UnityInputPath     = 'Code/'
    .UnityOutputPath    = 'Tmp/'
    .UnityNumFiles      = 99999999 // Too big
}
Output:
c:\Test\fbuild.bff(1):(1) FASTBuild Error #1054 - Unity() - Integer 'UnityNumFiles' must be in range 1 to 999.
Unity( 'name' )
^
\--here
Fix:
Unity( 'name' )
{
    .UnityInputPath     = 'Code/'
    .UnityOutputPath    = 'Tmp/'
    .UnityNumFiles      = 10
}
    