DAX add column and group other variable as other

[Anonymous]

I'm currently trying to create a page filter for my "Custom1" column that contains data "COP1" "COP2" and various other names.

Rather than have the entire list appear in the dropdown slicer is it possible to create an addcolumn via DAX that gives me values "COP1", "COP2" and "Other"? 

i.e. I'm trying to rename all other variables as "Other" in a new column

[Greg_Deckler]

Custom2 = SWITCH([Custom1],
"COP1" || "COP2",[Custom1],
"Other")

[Anonymous]

@Greg_Deckler An error has appeared :

Function 'SWITCH' does not support comparing values of type Text with values of type True/False. Consider using the VALUE or FORMAT function to convert one of the values .

Custom 1 Sort = SWITCH([Custom_1],

"COP1" || "COP2",[Custom_1],

"Other")

[Greg_Deckler]

Sorry @NeilL tried to get too fancy:

Custom2 = SWITCH([Custom1],
"COP1",[Custom1],
"COP2",[Custom1],
"Other")

[camargos88 · Accepted solution]

@Anonymous ,

Custom 1 Sort = IF([Custom_1] = "COP1" || [COLUMN1] = "COP2",[Custom_1], "Other")