shorcut square bracket to decrease/increase size

[PATRICIA27638820146c]

I just bought photoshop, (I use windows 10, spain I'm from spain) and I need to know if you are able to tell me how I can get the following shortcut configured:

[   ]  to decrease/increase size of brush

{  }  to decrease /increase brush hardness

Every time I try to set the "left square bracket" and the "right square bracket" on my keyboard... photoshop tells me error message: "Alt+Ctrl+ + is invalid shorcut"

PLEASE WHOEVER HELP ME WILL BE A HERO (I've been desperate for more than 3 hours trying everything

[Jeff Arola]

Like the error message in the Keyboard shortcuts dialog states, one can only use single characters (keys) for tool shortcuts.

That is, for example, one can assign G for a tools shortcut. One cannot combine any other keys with the G.

[Jeff Arola]

In case your not aware you can change the Brush size by

pressing Alt+right-click (Windows) or control+option (macOS), and drag left or right

https://helpx.adobe.com/photoshop/using/using-tools.html#selecting_and_displaying_tools

(under Visually resize or change hardness of painting cursors)

[PATRICIA27638820146c]

does not appear in the list of shortcuts (exactly for this reason I am trying to assign the Square Bracket shortcut, because it is not assigned by default.

When I try to assign this shortcut [ and ] to decrease brush and INCREASE bruish, it doesn't allow me and I get an error, I attach more pictures.

IT'S VERY IMPORTANT for me to assign this command because otherwise I can't work with my tablet and work is slow, how can I fix it, why doesn't it default and why can't I change it? I have the latest version of photoshop, please help...

[Bojan Živković]

You can use Shift + [] to change hardness. Thats default shortcut. Either way you must use Shift to activate brackets.

So 

[ ] decrease/increase size of brush

Shift + [ ] or { } to decrease /increase brush hardness

[PATRICIA27638820146c]

does not appear in the list of shortcuts (exactly for this reason I am trying to assign the Square Bracket shortcut, because it is not assigned by default.

When I try to assign this shortcut [ and ] to decrease brush and INCREASE bruish, it doesn't allow me and I get an error, I attach more pictures.

IT'S VERY IMPORTANT for me to assign this command because otherwise I can't work with my tablet and work is slow, how can I fix it, why doesn't it default and why can't I change it? I have the latest version of photoshop, please help...

[Bojan Živković]

Have you tried to use mentioned shortcuts without assigning them because those shortcuts are factory default, no need to assign them in shortcuts dialogue.

[PATRICIA27638820146c]

but in my photoshop appears this other shorcut for increase and decrease, and I have just buy it a few hours ago, i never touch nothing... 

[Bojan Živković]

Please try to use default shortcuts. Default shortcuts are not listed in that dialogue, I do not know why.

[Jeff Arola]

I get it now, i think.

Are you using a Spanish language keyboard and/or Windows 10 with the English language photoshop?

The traditional bracket keys of an English language keyboard aren't available to the English language photoshop version if the operating system is Spanish.

The easiest thing would be to download a Spanish set of keyboard shortcuts to use with the

English photoshop version and then the keys for brush size should be ' (reduce brush size) and ¡ (increase brush size)

https://helpx.adobe.com/photoshop/kb/downloadable-plugins-and-content.html

(under Keyboard shortcuts)

On an English USA keyboard that would be the -  (decrease brush size) and = (increase brush size)

Same location as the ' and ¡ on a Spanish language keyboard.

[Jeff Arola]

Maybe you have a reason for using the English language photoshop version, but you can download the Spanish (Español) language version of photoshop by going to the Creative Cloud Desktop Application.

File>Preferences>Apps>Default install language.

Then in photoshop go to Edit>Preferences>Interface, change the UI Language to Español, then restart photoshop.