Conditional Formatting of cell based on four different values

[SAMCRO2014]

I am trying to apply conditional formatting to a cell. I would like the cell to turn a specific colour if the value entered into the cell equals O, or o, or O* or o*. I have tried many attempts to find the correct formula for the conditional formatting to no avail. Can you help me out please?

 

[Eric W]

Try:

Book1
	G
1	OK
Sheet3

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
G1	Expression	=LEFT(G1)="o"	text	NO