2 question about solr and lucene

[Robin Wei]

Hi, guys:
    I met two questions about solr and lucene, wish people to help out.
use payload query but can NOT with numerical field type.  for example:          
      
        I implemented my own requesthandler, refer to 
http://hnagtech.wordpress.com/2013/04/19/using-payloads-with-solr-4-x/ 
         I query in solr:    sinaTag:operate
          solr response:
      "numFound": 2,
    "start": 0,
    "maxScore": 99,
    "docs": [
      {
        "id": "1628209010",
        "followersCount": 752,
        "sinaTag": "operate|99 C2C|98 B2C|97 OnlineShopping|96 E-commercial|94",
        "score": 99
           },
      {
        "id": "1900546410",
        "followersCount": 1002,
        "sinaTag": "Startup|99 Benz|98 PublicRelation|97 operate|96 Activity|95 
Media|94 AD|93 Vehicle|92 ",
              "score":   96
           }
        This work well. 
        But query with combined with other numberical condition, such as:
        sinaTag:operate and followersCount:[752 TO 752]
        {
       "responseHeader": {
        "status": 0,
        "QTime": 40
      },
      "response": {
        "numFound": 0,
        "start": 0,
        "maxScore": 0,
        "docs": []
      }
    }
    According these dataset, the first record should be responsed rather than 
NOT FOUND. 
    I not know why.


  2. About string field fuzzy match filtering, how to get the score? what the 
formula is?
     When I used two or several string fuzzy match, probable AND or OR,  how to 
get the score? what the formula is?
     Might I implement myself score formula class which interface or abstract 
class to extend ?
     
        


Thanks in advance.