Search for specific strings - then highlight cells

[fddekker]

I would like to find cells that contains the string PO (capital letters) on a worksheet and then highlight those cells in a specific color with a macro to be added to the ribbon.
It should not highlight cells where the string is part of a word, e.g. CORPORATE. The most likely strings would be:
POxxx
PO xxxxxxx
PO# xxxxx
PO#xxxx
(With x being numbers)
The string could be at the start or the middle of cells.

Any help on what the best syntax is to find these strings that would ignore the unwanted strings?

Thanks in advance.

 

[oldbrewer]

look for .PO where . is a single blank space

and look for if left(A1,=3)="PO." or "PO#" . single space

run down the column checking each cell in turn, where a match is found colour the cell

 

[fddekker]

Thanks. But the problem I am having is to fond a syntax that will find the 4 sub-strings in both the middle or beginning of cell contents. This UDF from Gary's Student: (note that 1 is where the UDF finds the string, and 0 if no string was found.)

have the same answers as my attempts:

It finds the sub-strings when they are NOT at the beginning of the cell. (A8 and A10 should also be found)
Any comments on where I go wrong?

Thanks in advance!

 

[oldbrewer]

one PO two	5	PO	1
3PO4	2	3PO4	1
3PO#	2	3PO#	1
SPOT	2	SPOT	0
POT	2	POT	0										PO	1
three PO	7	PO	1										PO	1
SPO	2	SPO	0										PO#	1
													#PO	1
													1PO1	1
													9PO9	1
													APOA	0
													ZPOZ	0
	using search for "PO" and
	pulling out the PO and one
	character around it
	and using a lookup table
	rejects SPOT POT SPO

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