How To Use Min And Max Functions In Rows?

Hi there,

I`ve got a problem with access. I Have data in several columns like:

Date Value 1 Value 2 Value 3 Value 4
1-1-01 12 10 11 9
2-1.01 14 7 16 11
etc.
Now I would like to add two columns that determine the min and max value of a row. Like below:

Date Value 1 Value 2 Value 3 Value 4 Min_value Max_value
1-1-01 12 10 11 9 9 12
2-1.01 14 7 16 11 7 16

Is this possible with the standaard min function? or how else do i do this?