This compiler error will occur if you use anything else than an expression which evaluates to an integer, as the step value of a for loop.

For example:

for nCtr = 1 to 9 step bOne // bOne is not integer
for nCtr = 1 to 9 step '1'  // '1' is not integer

See also: start point of for loop should be an integer expression.

Topic 108130, last updated on 18-Apr-2020