### Function: AddQuestStep(param1, param2, param3, param4, param5, param6, param7, param8, param9, param10, param11, param12, param13, param14, param15)

**Description:**
Placeholder description.

**Parameters:**
- `param1`: unknown - Unknown type.
- `param2`: unknown - Unknown type.
- `param3`: int32 - Integer value.
- `param4`: int32 - Integer value.
- `param5`: string - String value.
- `param6`: string - String value.
- `param7`: int32 - Integer value.
- `param8`: int32 - Integer value.
- `param9`: float - Floating point value.
- `param10`: float - Floating point value.
- `param11`: string - String value.
- `param12`: string - String value.
- `param13`: int16 - Short integer value.
- `param14`: int16 - Short integer value.
- `param15`: int32 - Integer value.

**Returns:** None.

**Example:**

```lua
-- Example usage
AddQuestStep(..., ..., ..., ..., ..., ..., ..., ..., ..., ..., ..., ..., ..., ..., ...)
```