Hi! I have sent a file to be printed and I think I made a mistake. I used Pantone Warm Red C in the document but I accidentally changed the cymk values to 0/98/98/0 (which is red, and pretty far from the Pantone Warm Red C colour); the colour was still spot, not process. Will the printer use the Pantone Warm Red C colour, as the swatch was named, or the cmyk values?

I'd give them a call to clarify your instructions.

Unfortunately they probably already printed it (I'm 95% sure, the document was very urgent).
What would happen "by default" with the settings I used?