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  • Using a loop statement with a variable step to initialize an array
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Error 19: The step of this FOR loop must be constant
Reason
This code line uses a loop statement (FOR). The STEP of this loop statement is likely to change at each iteration.
Remark: Only the loops based on a local variable (integer or real) accept a variable step.
Correction
Modify the STEP of your loop statement.
Example

Using a loop statement with a variable step to initialize an array

Code triggering the error
J is int = 0
I is int = 0
MyArray is array of 5 int
FOR I = 1 TO 5 STEP J+1
        MyArray[I] = I
END
Possible correction
Use a fixed step.
J is int = 0
I is int = 0
MyArray is array of 5 int
FOR I = 1 TO 5 STEP J
        MyArray[I] = I
END
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