TFS 1.X+ Shield Skill without shield

[GOD Half]

Can anyone help me make a system that the character increases the shield skill when using armor instead of shield?

SOLVED:
I just added that code (will receive the skill if it takes damage):

    if (damage > 0) {
        addSkillAdvance(SKILL_SHIELD, 1);
    }

In the part below (player.cpp):

BlockType_t Player::blockHit(Creature* attacker, CombatType_t combatType, int32_t& damage,
                             bool checkDefense /* = false*/, bool checkArmor /* = false*/, bool field /* = false*/)
{
    BlockType_t blockType = Creature::blockHit(attacker, combatType, damage, checkDefense, checkArmor, field);

    if (attacker) {
        sendCreatureSquare(attacker, SQ_COLOR_BLACK);
    }

    if (blockType != BLOCK_NONE) {
        return blockType;
    }

    if (damage <= 0) {
        damage = 0;
        return BLOCK_ARMOR;
    }

    if (damage > 0) {
        addSkillAdvance(SKILL_SHIELD, 1);
    }

Or change to get skill if take any attack (with damage or no):

    if (attacker) {
        sendCreatureSquare(attacker, SQ_COLOR_BLACK);
        addSkillAdvance(SKILL_SHIELD, 1); // ADD THIS
    }