Creating a special function that simply sets STR_VAR_1?

[Kubes]

If anyone knows any good references for working with disassembled ROMs in C, it would be greatly appreciated!
I wanted to initially only use PoryScript, but I've found myself tempted with C, but am not finding many resources.
Right now, I am trying to get a custom special function that takes a byte as a parameter working. So far I have it compiling (when not referenced in a script)... now onto the working part :P

Spoiler:

#include "aaa_kubes_test.h"
#include "string_util.h"
#include "script.h"

static u8 *const sScriptStringVars[] =
    {
        gStringVar1,
        gStringVar2,
        gStringVar3,
};

void kubes_test(void) {

    u8 *dest = sScriptStringVars[0];

    StringCopy(dest, _("Kubes string from C!"));

}

Edit1: One thing...

I hadn't added my script to ".rodata:" in "ld_script.txt"

-fixed- But, now my string comes out as gibberish :/

Edit2:
Changed script to:

Spoiler:

void kubes_test(void){

    u8 *dest;
    u8 str[8] = _("String!");

    dest = sScriptStringVars[0];
    StringCopy(dest, str);
}

Fixed gibberish.

Edit 3:
And today, success!

kubes_notspecial_test(x) will set string buffer x to a specific value! My main issue was that I was trying to make it a special function.

Spoiler:

// Added function name to data/script_cmd_table.inc
// Included macro in asm/macros.inc

// Script Command
// src/kubes.c

#include "kubes.h"
#include "string_util.h"
#include "script.h"

static u8 *const sScriptStringVars[] =
    {
        gStringVar1,
        gStringVar2,
        gStringVar3,
};

void ScrCmd_kubes_notspecial_test(struct ScriptContext *ctx)
{
    u8 *dest;
    u8 str[18] = _("NotspecialString!");

    u8 stringVarIndex = ScriptReadByte(ctx);

    if (stringVarIndex > 2) { // Index out of range
        return;
    }


    dest = sScriptStringVars[stringVarIndex];
    StringCopy(dest, str);
}


// Macro
// asm/macros/kubes.inc

.macro kubes_notspecial_test str_buf_index
.byte 0xe3 @ assuming this is the index in gScriptCmdTable
.byte \str_buf_index @ my parameter :D
.endm