How to make a key act as acute and apostrophe? Dead keys problem

I want to make a keycharmap/keylayout for my Bluetooth keyboard on my Android phone. I want it to behave like a Dvorak-US-international keyboard. So I did all the web research needed but I'm still missing one thing. In my PC, the apostrophe key behaves as an acute key, if I press it once and then press a vowel, it writes the vowel with the acute (my native language is Spanish so I've become dependent on this "feature"), so I want this behavior in android. In my PC: APOSTROPHE A = á APOSTROPHE O = ó APOSTROPHE Shift+A = Á APOSTROPHE APOSTROPHE = ´ (lonely acute) APOSTROPHE SPACE = ' Shift+APOSTROPHE A = ä Shift+APOSTROPHE Shift+A = Ä Shift+APOSTROPHE Shift+APOSTROPHE = ¨ (umlaut) Shift+APOSTROPHE SPACE = " So I made a keycharmap that has this: key APOSTROPHE { label: '\'' base: '\u0301' shift: '\u0308' } (As specified in https://source.android.com/docs/core/interaction/input/key-character-map-files#behaviors) But what I've got was this behavior: APOSTROPHE APOSTROPHE = ´ (lonely acute) APOSTROPHE SPACE = ´ (lonely acute) Shift+APOSTROPHE Shift+APOSTROPHE = ¨ (umlaut) Shift+APOSTROPHE SPACE = ¨ (umlaut) As you can see __I'm missing the quote and double quote__ and I'd really like to have them. So, I tried something different: key APOSTROPHE { label: '\'' base: '\u030D' shift: '\u030E' } (Looking at Android source https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/view/KeyCharacterMap.java#233 and at unicode "combining character" in Wikipedia) But didn't get what I wanted either. I saw that the character '\u030E' was comment-out on the source code ok, but I had to try. So the question is: How do I get the behavior I want in Android? Can't it be done without modifying Android sources? Do I have to use key modifiers (ALT or CTRL) and stick with that? (I'm using CyanogenMod 11-20140708 based on KitKat 4.4.4 on a LG Nexus 4 (mako))