Build flag with code-loc not working.

[mikaelsundin]

I trying to move the code location in flash(for a bootloader).

Tested in platformio with build_flags

• --code-loc 0x8020
• --code-loc 32800.

Both does not work.
error 194: Bad integer argument for option --code-loc

My platformio.ini

[env:stm8sblue]
platform = ststm8
board = stm8sblue
framework = spl

build_flags = --code-loc 0x8020

Output

Processing stm8sblue (platform: ststm8; board: stm8sblue; framework: spl)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/ststm8/stm8sblue.html
PLATFORM: ST STM8 (2.1.0) > ST STM8S103F3 Breakout Board
HARDWARE: STM8S103F3P6 16MHz, 1KB RAM, 8KB Flash
DEBUG: Current (stlink) External (stlink)
PACKAGES:
 - framework-ststm8spl @ 0.20301.181217 (2.3.1)
 - tool-stm8binutils @ 0.230.0 (2.30)
 - toolchain-sdcc @ 1.40200.0 (4.2.0)
LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf

LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 0 compatible libraries
Scanning dependencies...
No dependencies
Building in release mode
Compiling .pio\build\stm8sblue\SPL\stm8s_gpio.rel
Compiling .pio\build\stm8sblue\src\main.rel      
at 1: error 194: Bad integer argument for option --code-loc
*** [.pio\build\stm8sblue\SPL\stm8s_gpio.rel] Error 1      
at 1: error 194: Bad integer argument for option --code-loc
*** [.pio\build\stm8sblue\src\main.rel] Error 1