[ms-xlsx]: Excel (. xlsx) Extensions to the Office Open xml spreadsheetml file Format

maxLength: An unsignedInt attribute that specifies the length of the longest data bar in this conditional formatting range, expressed as a percentage of the width of the cell being formatted. MUST be greater than or equal to minLength and less than or equal to 100. If in this same worksheet part there exists a CT_ExtensionList element that is a descendent of a CT_CfRule with a child CT_Extension element with the child ST_Guid element equal to the id attribute of the CT_CfRule element that is a parent of this element, and the minLength attribute of this element is zero ("0") and the maxLength attribute of this element is "100", the maxLength attribute of the CT_DataBar element that is a descendent of the CT_CfRule element that is a parent of the CT_ExtensionList'>CT_ExtensionList element that is a parent of the CT_Extension element with the child ST_Guid element that is equal to the id attribute of the CT_CfRule element that is a parent of this element MUST be "90". If, in this same worksheet part, there exists a CT_ExtensionList element that is a descendent of a CT_CfRule with a child CT_Extension element with the child ST_Guid element equal to the id attribute of the CT_CfRule element that is a parent of this element, and the minLength attribute of this element is not zero ("0") or the maxLength attribute of this element is not "100", the maxLength attribute of the CT_DataBar element that is a descendent of the CT_CfRule element that is a parent of the CT_ExtensionList element that is a parent of the CT_Extension element with the child ST_Guid element that is equal to the id attribute of the CT_CfRule element that is a parent of this element MUST be equal to this record’s maxLength.