When the Rule Type selected is Replace String in Response Body, the following options available.

Rule Name

The name of the rule. The rule name must be unique.

Match String

The string to match.

Replacement text

The replacement string.

Ignore Case

Enable this check box to ignore the case of the strings when comparing.

Perform If Flag Set

Only execute this rule if the specified flag is set.

The flag will have been set by a different rule.

Perform If Flag is NOT Set

Only try to execute this rule if the specified flag is not set.