How to auto increment/decrement a value based on character position?

[bijodev1]

Hi Everyone,

So the goal here is to auto increment / decrement a value based on the position of character present in a string.
For example : Here I am trying to pull and an assign a value to R

This works but only when the "pos" is less than 3. I would like to assign the value for each and every position.

Field1 = "RFTGQOASZ"

| makeresults
| field1 = "RFTGQOASZ"
| eval pos = len(mvindex(split(field1,"R"),0))+1
| eval value = 5
| eval pos1 = if(pos<3,value,0)

likewise the field1 value will change every time, I would like to assign a value based on the position.
so let say if the "R" character is in the middle , auto decrement the value, something like i--.

[bijodev1]

Field1 = "RFTGQOASZ"
Here I am trying to assign a value to R based on it position. I don't want to use case

| makeresults
| eval assignvalue=10
| eval if the position of "R" is 1st Assign value 10 , if 2nd assign value 9, if 3rd  assign value -8 and so on

[ITWhisperer · Accepted solution]

| makeresults
| field1 = "RFTGQOASZ"
| eval pos = len(mvindex(split(field1,"R"),0))
| eval value = 10-pos

[bijodev1]

if the position is 1, I would like to minus the value 4.  -  field1 = "RFTGQOASZ"
if the position is 2, I would like to minus the value 3.  -  field1 = "FRTGQOASZ"
if the position is 3, I would like to minus the value 2.  -  field1 = "FTRGQOASZ"

so if the position is high, value will decrease

so the value should be auto increment/decrement based on the position.

[ITWhisperer]

| eval value=pos-4

[ITWhisperer]

Please can you expand on your example as it is not clear which value is incremented or decremented, or when i.e. which event would contain the result?