diff --git a/workflow/engine/classes/class.AppSolr.php b/workflow/engine/classes/class.AppSolr.php
index e64d51a10..74e6c94b2 100644
--- a/workflow/engine/classes/class.AppSolr.php
+++ b/workflow/engine/classes/class.AppSolr.php
@@ -1169,7 +1169,7 @@ class AppSolr
             }
           }
         }
-        
+
         // validate phrase in case of date
         if (($searchText [1] == "[")) {
           // validate date range format
@@ -1210,7 +1210,54 @@ class AppSolr
             throw new InvalidIndexSearchTextException ("Invalid search text. Expected date interval format => {variable_name}:[YYYY-MM-DD TO YYYY-MM-DD]");
           }
         }
-        
+
+        // validate phrase in case of < and <=
+        $result1 = strpos($searchText, '<');        
+        if($result1 !== FALSE){
+          $result = strpos($searchText, '<=');  
+          if ($result !== FALSE){
+             $v1 = str_replace( '<=', '', $searchText ); 
+             $v2 = str_replace( ':', '', $v1);                                  
+             $v3 = str_replace( '<','' ,':[* TO '.$v2.']' );                 
+             $searchText = $v3;            
+          }      
+          else {
+            $v1 = str_replace( '<', '', $searchText ); 
+            $v2 = str_replace( ':', '', $v1);               
+            $v3 = (int) $v2-1;          
+            $v4 = str_replace( '<','' ,':[* TO '.$v3.']' );                 
+            $searchText = $v4;
+          }                    
+          }
+        // validate phrase in case of > and >=
+        $result2 = strpos($searchText, '>');
+        if($result2 !== FALSE){
+          $result = strpos($searchText, '>=');  
+          if ($result !== FALSE){
+             $v1 = str_replace( '>=', '', $searchText ); 
+             $v2 = str_replace( ':', '', $v1);                                  
+             $v3 = str_replace( '>','' ,':['.$v2.' TO *]' );                  
+             $searchText = $v3;            
+          }      
+          else {
+             $v1 = str_replace( '>', '', $searchText );    
+             $v2 = str_replace( ':', '', $v1 );    
+             $v3 = (int) $v2+1;          
+             $v4 = str_replace( '>','' ,':['.$v3.' TO *]' );                
+             $searchText = $v4;      
+          }                    
+           
+        }
+
+        // validate phrase in case of |
+        $result2 = strpos($searchText, '|');
+        if($result2 !== FALSE){        
+          $v1 = str_replace( '|', ' TO ', $searchText );
+          $v2 = str_replace( ':', '', $v1 );                  
+          $v3 = str_replace( '','' ,':['.$v2.']' );                
+          $searchText = $v3;                   
+          }
+        //echo $searchText;
         $formattedSearchText .= $indexFieldName . $searchText;
         $includeToken = true;
       }