Add 12 mobile months repeating empty data

Hello @Syndicate_Admin Rico Zhou

I already found the solution:

Headcount SSOMA=
VAR _SUMMAIRZE =
    SUMMARIZE (
        'Calendar';
        Calendar[Date]. [Year];
        Calendar[Date]. [Month];
        "HEADCOUNT"; CALCULATE ( [NominaPropios] ))

VAR _CIA = SELECTEDVALUE('Compañía'[EmpresaPivote])
var FilterCia= IF(COUNTROWS(FILTERS('Compañía'[EmpresaPivote]))=1; FALSE(); TRUE())
VAR VoF=IF(FilterCia=FALSE();_CIA; TRUE())
VAR _ADD =
    ADDCOLUMNS (
        _SUMMAIRZE;
        "NewHeadCount";
            VAR _DATE =
                MAXX ( ALL( NominaCons ); NominaCons[Periodo (fecha)] )
            VAR _LASTVALUE =
                CALCULATE (
                    [NominaPropios];
                    all('NominaCons');
                    'NominaCons'[Periodo (fecha)] = _DATE;
                    'Compañía'[EmpresaPivote] IN VALUES('Compañía'[EmpresaPivote]);
                    TipoMineria[Tipo] IN VALUES(TipoMineria[Tipo]);
                    TipoNomina[TipoNomina] IN VALUES(TipoNomina[TipoNomina]);
                    BU[UNIDAD_DE_NEGOCIO] IN VALUES(BU[UNIDAD_DE_NEGOCIO])
                )
            RETURN
                IF ( ISBLANK ( [HEADCOUNT] ); _LASTVALUE; [HEADCOUNT] )
    )
RETURN
    SUMX ( _ADD; [NewHeadCount] )