Slicer for multi cell value

Hi Vishwamber ,

Based on the sample and description you provided, Please try the following steps:
My Sample:

1.You can create a calcualted table.

Table 2 = 
DATATABLE (
    "Value", STRING,
    "Index", INTEGER,
    {
        { "r1", 1 },
        { "r2", 2 },
        { "r3", 3 },
        { "r4", 4 },
        { "r5", 5 },
        { "r6", 6 },
        { "r7", 7 },
        { "r8", 8 },
        { "r9", 9 },
        { "r10", 10 },
        { "r11", 11 },
        { "r12", 12 },
        { "r13", 13 },
        { "r14", 14 },
        { "r15", 15 },
        { "r16", 16 },
        { "r17", 17 },
        { "r18", 18 },
        { "r19", 19 },
        { "r20", 20 },
        { "r21", 21 },
        { "r22", 22 },
        { "r23", 23 },
        { "r24", 24 }
    }
)

2. Use the following code to create a measure.

Contains_r = 
VAR Within_text =
    SELECTEDVALUE ( 'Table'[y] ) & ","
VAR Find_text =
    SELECTEDVALUE ( 'Table 2'[Value], BLANK () ) & ","
RETURN
    IF ( CONTAINSSTRING ( Within_text, Find_text ), 1, 0 )

3. Select your visual object, put the measure in the "Filters on this visual" section, and filter it by "Measure is 1".

The field of the slicer is from Table 2. When you select "r1" in the slicer, Result is as below.

Is this the result you expect?
For further detail, please find attachment.

Best Regards,
Yulia Yan

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