How to pass a value from one component to another component in webdynpro

I have created component which consists of alv display and in the alv table  I have created pernr has link and when I click that pernr the second webdypro component opens which I have created . now in the second component I want that pernr value. based on that I want to fetch some data.

See i have this code for example which calls the browser with concatenated URL:
CONSTANTS: l_c_url_part1 TYPE string VALUE '?sap-system-login-basic_auth=X&sap-client=',
                     l_c_url_part2 TYPE string VALUE '&sap-language=EN',
                     l_c_url_part3 TYPE string VALUE '&PARAMETER1=',
                     l_c_url_part4 TYPE string VALUE '&PARAMETER2='.
CALL METHOD cl_wd_utilities=>construct_wd_url
                 application_name = 'ZTEST'
                 out_absolute_url = l_v_url.
             CONCATENATE l_v_url  l_c_url_part1
                         sy-mandt l_c_url_part2 l_c_url_part3 'VALUE1' l_c_url_part4 'VALUE2' INTO l_v_url.
                   url                           = l_v_url1
                   new_window             = 'X'
                   frontend_not_supported = 1
                   frontend_error         = 2
                   prog_not_found         = 3
                   no_batch               = 4
                   unspecified_error      = 5
                   OTHERS                 = 6.
               IF sy-subrc <> 0.
                 MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
                         WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

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