Help Needed on internal tables and field symbols

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Hi all,

I am using a single program to upload data into many tables(only one at a time).

The table name is a parameter to the program. Following is a snippet of the code I have. I need help in moving from the internal table(itab) to the table structure (<tab>) which I use with the modify command.

parameters: p_table(20) default 'ZTEST'.

DATA dref TYPE REF TO data.

DATA tabdref TYPE REF TO data.

FIELD-SYMBOLS <fs_struc> TYPE ANY.

FIELD-SYMBOLS <fs_tab> TYPE table.

CREATE DATA dref TYPE (p_table).

ASSIGN dref->* TO <fs_struc>.

CREATE DATA tabdref TYPE TABLE OF (p_table).

ASSIGN tabdref->* TO <fs_tab>.

perform read_from_excel into an internal table - itab
itab has fields col1, col2, col3, col4

-- I NEED TO MOVE FROM INTERNAL TABLE itab to <fs_tab>

(The table will not have more than 4 fields + mandt)

modify (p_table) FROM TABLE <fs_tab>.

PS: This is my first time in the SDN network. So, I hope this is the correct forum. It would be great, if u could provide detailed code, as I have been stuck for quite some time with this and need to resolve it at the earliest.

Thanks,

AP