diff --git a/pyghmi/ipmi/oem/lenovo/config.py b/pyghmi/ipmi/oem/lenovo/config.py
index 5a3758f4..4f7d9c47 100644
--- a/pyghmi/ipmi/oem/lenovo/config.py
+++ b/pyghmi/ipmi/oem/lenovo/config.py
@@ -353,6 +353,7 @@ class LenovoFirmwareConfig(object):
                     reset = False
                     name = setting.find("mriName").text
                     help = setting.find("desc").text
+                    validexpression = None
                     onedata = setting.find('text_data')
                     if onedata is not None:
                         if onedata.get('password') == 'true':
@@ -366,6 +367,7 @@ class LenovoFirmwareConfig(object):
                     if onedata is not None:
                         if onedata.get('maxinstance') is not None:
                             forceinstance = True
+                        validexpression = onedata.get('pattern', None)
                         instances = list(onedata.iter('instance'))
                         if not instances:
                             protect = True  # not supported yet
@@ -451,6 +453,7 @@ class LenovoFirmwareConfig(object):
                                     readonly_expression=readonly,
                                     hide_expression=hide,
                                     sortid=sortid,
+                                    validexpression=validexpression,
                                     alias=alias)
                                 sortid += 1
                                 instidx += 1
@@ -479,6 +482,7 @@ class LenovoFirmwareConfig(object):
                                 readonly_expression=readonly,
                                 hide_expression=hide,
                                 sortid=sortid,
+                                validexpression=validexpression,
                                 alias=alias)
                             sortid += 1
                         continue
@@ -503,6 +507,7 @@ class LenovoFirmwareConfig(object):
                                                readonly_expression=readonly,
                                                hide_expression=hide,
                                                sortid=sortid,
+                                               validexpression=validexpression,
                                                alias=alias)
                     sortid = sortid + 1
         for opt in options:
diff --git a/pyghmi/ipmi/oem/lenovo/imm.py b/pyghmi/ipmi/oem/lenovo/imm.py
index 51ffe521..32ed8783 100644
--- a/pyghmi/ipmi/oem/lenovo/imm.py
+++ b/pyghmi/ipmi/oem/lenovo/imm.py
@@ -315,6 +315,11 @@ class IMMClient(object):
                                 '({2})'.format(
                                     newvalue, key,
                                     ','.join(self.fwo[key]['possible'])))
+                elif self.fwo[key]['validexpression']:
+                    if not re.match(self.fwo[key]['validexpression'], newvalue):
+                        raise pygexc.InvalidParameterValue(
+                            '"{0}" does not match expression "{1}"'.format(
+                                newvalue, self.fwo[key]['validexpression']))
                 newnewvalues.append(newvalue)
             if len(newnewvalues) == 1:
                 self.fwo[key]['new_value'] = newnewvalues[0]
diff --git a/pyghmi/redfish/oem/lenovo/xcc.py b/pyghmi/redfish/oem/lenovo/xcc.py
index a11dd458..e4ec6da4 100644
--- a/pyghmi/redfish/oem/lenovo/xcc.py
+++ b/pyghmi/redfish/oem/lenovo/xcc.py
@@ -253,6 +253,11 @@ class OEMHandler(generic.OEMHandler):
                                 '({2})'.format(
                                     newvalue, key,
                                     ','.join(self.fwo[key]['possible'])))
+                elif self.fwo[key]['validexpression']:
+                    if not re.match(self.fwo[key]['validexpression'], newvalue):
+                        raise pygexc.InvalidParameterValue(
+                            '"{0}" does not match expression "{1}"'.format(
+                                newvalue, self.fwo[key]['validexpression']))
                 newnewvalues.append(newvalue)
             if len(newnewvalues) == 1:
                 self.fwo[key]['new_value'] = newnewvalues[0]