Kuka Robot point assigning

Hello,
I am new at robot programming and I need to program the robot for welding. I have 4 points for 1 welding proccess after that only x will change about 38 mm's and will do the welding for that place again. I have 3x6 for the welding I am using right now but after it finished I will do the same proccesses for 4x15, 4x17, 4x12 even when I am trying to program 3x6 it has a lot of points and I have declared one by one and it is taking too much time. Instead of declaring one by one is there any chance that like change the x axis for the second point and do the same proccesses or is there any other way I can approach it?
Any suggestions would be greatly appriciated!

It is for base axis yes my optimized base is Base 2 I will try your suggestion thank you for a quick response.

Quote from SkyeFire

Which X axis? Tool or Base?

Base offsets are rather easy. Assuming you set up your optimized Base as Base 1, and taught your weld points in Base 2, you can:

Code

FOR nCount = 0 to 4
  BASE_$DATA[2] = BASE_DATA[1] ; set Base 2 equal to Base 1
  BASE_DATA[2].X = BASE_DATA[2].X + (nCount * 38.0) ; offset along Base 2 X axis
  ; put weld moves here
ENDFOR

Yes that works but not spesifically I wanted I guess I was wrong by telling you the axis because when I use this code tool moves to the direction I want at nCount=0 there are no problem but after that when it goes in to the nCount=1 tool does not go to the exact location I want. When I look to the base coordinates it changes the x axis by 38 mm but the tool goes 38mm at x axis and some different mm with y and z axis. Is there any way that moves only the tool by 38 mm at x axis by the base I declared not by the robots base?

Quote from hermann

Code

decl frame fOffset

fOffset=$nullframe
FOR nCount = 0 to 4
 foffset.x = (nCount * 38.0)
  BASE_$DATA[2] = BASE_DATA[1] ; set Base 2 equal to Base 1
  BASE_DATA[2]  = BASE_DATA[2] : fOffset ; offset along Base 2 X axis
  ; put weld moves here
ENDFOR

Yes thats exactly what I want thank you for your response Mr/Mrs Hermann.

Quote from panic mode

there is a typo in several posts.... there is no BASE_$DATA[], the $ character should be removed.

Yes with the & code gives an error. Problem solved by Mr/Mrs Hermann's answer but thank you for your response too.