axis x homing and g54x0 from program

hi
I need to rehoming the x-axis and the g54 to x0.0 from the program. For example:

x = 1234
g54 = 5678

at the beginning of the program should have the ability to insert "home asse x" and "g54 x0.0"
and also "touch of x = 0"

any suggestions?

regards

www.linuxcnc.org/docs/html/gcode/gcode.html#sec:G10-L20

yes,ok
i inserted into gcode program g10 l20 p1 x0.0 before repeat cicle
When re-homing the machine g54 is the old value and x -> =g54
Next when start the program the line g10 l20 p1 x0.0 --> g54 ->x0 and x->0
correct
thank's
regards