diff --git a/src/Placeholders.py b/src/Placeholders.py
index d0acb223..aecbb101 100644
--- a/src/Placeholders.py
+++ b/src/Placeholders.py
@@ -65,6 +65,10 @@ def read_input(self, xml):
       # magic word for "relative to HERON root"
       heron_path = hutils.get_heron_loc()
       self._target_file = os.path.abspath(self._source.replace('%HERON%', heron_path))
+    elif self._source.startswith('%FARM%'):
+      # magic word for "relative to FARM root"
+      farm_path = hutils.get_farm_loc()
+      self._target_file = os.path.abspath(self._source.replace('%FARM%', farm_path))
     else:
       # check absolute path
       rel_interp = os.path.abspath(os.path.join(self._workingDir, self._source))
diff --git a/src/_utils.py b/src/_utils.py
index 99516261..3bad46d4 100644
--- a/src/_utils.py
+++ b/src/_utils.py
@@ -47,13 +47,28 @@ def get_cashflow_loc(raven_path=None):
   """
   if raven_path is None:
     raven_path = get_raven_loc()
-  plugin_handler_dir = path.join(raven_path, '..', 'scripts')
+  plugin_handler_dir = path.join(raven_path, 'scripts')
   sys.path.append(plugin_handler_dir)
   plugin_handler = importlib.import_module('plugin_handler')
   sys.path.pop()
   cf_loc = plugin_handler.getPluginLocation('TEAL')
   return cf_loc
 
+def get_farm_loc(raven_path=None): # Added by Haoyu Wang, May 25, 2022
+  """
+    Get FARM location in installed RAVEN
+    @ In, raven_path, string, optional, if given then start with this path
+    @ Out, cf_loc, string, location of CashFlow
+  """
+  if raven_path is None:
+    raven_path = get_raven_loc()
+  plugin_handler_dir = path.join(raven_path, 'scripts')
+  sys.path.append(plugin_handler_dir)
+  plugin_handler = importlib.import_module('plugin_handler')
+  sys.path.pop()
+  farm_loc = plugin_handler.getPluginLocation('FARM')
+  return farm_loc
+
 def get_all_resources(components):
   """
     Provides a set of all resources used among all components
diff --git a/src/validators/Factory.py b/src/validators/Factory.py
index 6a998949..8288e09a 100644
--- a/src/validators/Factory.py
+++ b/src/validators/Factory.py
@@ -2,12 +2,33 @@
 # ALL RIGHTS RESERVED
 
 from .ExampleValidator import Example
+import os
+import sys
 
+# set up path of raven
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+import _utils as hutils
+raven_path = hutils.get_raven_loc()
+
+# set up path of farm
+farm_loc = hutils.get_farm_loc(raven_path=raven_path)
+if farm_loc is not None:
+  farm_path = os.path.abspath(os.path.join(farm_loc))
+  sys.path.append(farm_path)
+  from FARM.src.FARMValidatorsForHeron import FARM_Beta, FARM_Gamma_LTI, FARM_Gamma_FMU
+
+# default known validators
 known = {
     'Example': Example,
     # ModelicaGoverner: TODO,
 }
 
+# add farm validators to the known dictionary
+if farm_loc is not None:
+  known['FARM_Beta'] = FARM_Beta
+  known['FARM_Gamma_LTI'] = FARM_Gamma_LTI
+  known['FARM_Gamma_FMU'] = FARM_Gamma_FMU
+
 def get_class(typ):
   """
     Returns the requested dispatcher type.