Yes. Try this:
Preview: Change markup text size.kmmacros (3.2 KB)
Script as text:
tell application id "com.stairways.keyboardmaestro.engine"
set inst to system attribute "KMINSTANCE"
set textSize to (getvariable "Local Text Size" instance inst) --as number
end tell
tell application "System Events"
tell application process "Preview"
tell first window
tell (first toolbar whose description is "toolbar")
if value of (first checkbox whose description is "Markup") is 0 then
tell (first checkbox whose description is "Markup")
perform action "AXPress"
end tell
end if
end tell
tell (first toolbar whose description is "edit toolbar")
tell (first button whose description is "Text Style")
perform action "AXPress"
tell first pop over
tell first text field
set its value to textSize
confirm
end tell
end tell
end tell
end tell
end tell
end tell
end tell