Time Units Validate

[MichaelR]

G'Day

One of our agents found something today, when entering time units, I cannot enter enter '.75' as it is invalid time. Whereas '0.75' is a valid time.

The particular string that determines if it is right is: /^-{0,1}\d+?((\.|,){0,1}\d+?){0,1}$/

Can someone have a look at it and see if they can modify it to allow for '.' at the start of the string? My regex uberness is not up to it today.