checksum ISO 7064 Mod. 37/36
    
    
| 
     Group  | 
                
Creates a checksum using ISO 7064 Mod. 37/36. Dashes and whitespaces are ignored. Any other invalid character will lead to the abortion of the function.
Parameter Descriptions
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     Parameter  | 
                
     Description  | 
        
| 
     a  | 
                
     Value to create the checksum for.  | 
        
Example
| 
     Parameter a  | 
                
     Result  | 
        
| 
     123AB  | 
                
     X  | 
        
| 
     DADPIDA3897722461  | 
                
     J  | 
        
| 
     DA-DPIDA-3897722461-  | 
                
     J  | 
        
| 
     A12425GABC1234002  | 
                
     M  | 
        
| 
     A1-2425G-ABC1234-002-  | 
                
     M  |