Authors CurseForge

Hello addon developers! Sorry if I'm writing in the wrong place. 

I want to create a button that would track the buff on me. And when a button appears, I would press it and use a spell.

For this, I decided to use the addon Weakauras 2.  This addon can track buffs, it remains only to write the code for the button.

The button only responds to a mouse left click.
Please tell me what needs to be added to the code so that my button responds to the "1" key.
Thanks!

My code

-- Creating button
local captor = CreateFrame("Button", nil, aura_env.region, "SecureActionButtonTemplate")

-- Setting position
point, relativeTo, relativePoint, xOfs, yOfs = aura_env.region:GetPoint()
captor:SetPoint(point, relativeTo, relativePoint, xOfs, yOfs)
captor:SetWidth(aura_env.region:GetWidth())
captor:SetHeight(aura_env.region:GetHeight())

captor:SetAttribute("type", "spell");
captor:SetAttribute("spell", "Spellname");