In the Between Page trigger, you attempted to set the value of a Reports Builder column or parameter. For example, you can use the value of a column called COUNT1 in a condition (for example, IF :COUNT1 = 10), but you cannot directly set its value in an assignment statement (for example, COUNT1 = 10).
Action:
Remove the assignment statement from the group filter.
Note: For help on other error messages, see Finding error message help.
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