Sprite background not transparent

[CheeseCakeBeats]

I'm back with another problem.

I'm adding sprites to the fighter factory and whenever I try to check the box "Activate tranparency" the background surrounded by the character is still there. I've tried looking at tutorials and they all confuse me even more.
I just want a certain color to be transparent, how would I do that?

[O Ilusionista]

Because the transparent color needs to be the first color on the palette (for PNG) or the first one (PCX)
Here is a complete tutorial

[CheeseCakeBeats]

Because the transparent color needs to be the first color on the palette (for PNG) or the first one (PCX)
Here is a complete tutorial

I changed it to the first color and still no result.
Here is a picture of what I'm looking at: https://imgur.com/a/Zm97q

[O Ilusionista]

on FFC, the palette appears reversed. So that blue should be in the last position (the one which is white).

[CheeseCakeBeats]

on FFC, the palette appears reversed. So that blue should be in the last position (the one which is white).

Thanks it works now, also had to save and load again.