Index: compile_rules_graph.py
==================================================================
--- compile_rules_graph.py
+++ compile_rules_graph.py
@@ -16,11 +16,11 @@
 
 def prepareFunction (s, bTokenValue=False):
     "convert simple rule syntax to a string of Python code"
     s = s.replace("__also__", "bCondMemo")
     s = s.replace("__else__", "not bCondMemo")
-    s = re.sub(r"(morph|analyse|displayInfo)[(]\\(\d+)", 'g_\\1(lToken[\\2+nTokenOffset]', s)
+    s = re.sub(r"(morph|analyse|value|displayInfo)[(]\\(\d+)", 'g_\\1(lToken[\\2+nTokenOffset]', s)
     s = re.sub(r"(select|exclude|define)[(][\\](\d+)", 'g_\\1(lToken[\\2+nTokenOffset]', s)
     s = re.sub(r"(tag_before|tag_after)[(][\\](\d+)", 'g_\\1(lToken[\\2+nTokenOffset], dTags', s)
     s = re.sub(r"(switchGender|has(?:Mas|Fem)Form)[(]\\(\d+)", '\\1(lToken[\\2+nTokenOffset]["sValue"]', s)
     s = re.sub(r"(morph|analyse)\(>1", 'g_\\1(lToken[nLastToken+1]', s)                     # next token
     s = re.sub(r"(morph|analyse)\(<1", 'g_\\1(lToken[nTokenOffset]', s)                     # previous token

Index: gc_core/py/lang_core/gc_engine.py
==================================================================
--- gc_core/py/lang_core/gc_engine.py
+++ gc_core/py/lang_core/gc_engine.py
@@ -971,10 +971,16 @@
         self.lToken = lNewToken
 
 
 
 #### Analyse tokens
+
+def g_value (dToken, sValues, nLeft=None, nRight=None):
+    "test if <dToken['sValue']> is in sValues (each value should be separated with |)"
+    sValue = "|"+dToken["sValue"]+"|"  if nLeft is None  else "|"+dToken["sValue"][slice(nLeft, nRight)]+"|"
+    return sValue in sValues
+
 
 def g_morph (dToken, sPattern, sNegPattern="", nLeft=None, nRight=None, bMemorizeMorph=True):
     "analyse a token, return True if <sNegPattern> not in morphologies and <sPattern> in morphologies"
     if "lMorph" in dToken:
         lMorph = dToken["lMorph"]