I tried out, "disable" works by creating the Action Builder, but "enable" cannot. Am I getting anything wrong?

Button1 is clicked to disable Page1, code automatically generated by LiveCycle:
oTargetField = this.resolveNode("Page1");
oTargetField.access = "readOnly";
However it cannot enable the form1/Page1 with another button in page 2, code automatically generated by LiveCycle is like this:
oTargetField = this.resolveNode("Page1");
oTargetField.access = "open";