Dynamically changing attributes of a field in view container UI element

In the layout of the web dynpro component I have added a view container UI element. I am populating the fields in the view container UI element in methods in component controller using the following code
*--Adding a Checkbox
lv_str = wd_assist->if_wd_component_assistance~get_text( '009' ).
CALL METHOD wd_this->att_wd_handler->add_parameter_field
    EXPORTING
      i_id          = 'CHB_DOWNLOAD_CHECKBOX'
      i_description = lv_str
      i_value       = lv_chb_download_checkbox
      i_as_checkbox = abap_true.
*--Adding a Parameter
    lv_str = wd_assist->if_wd_component_assistance~get_text( '010' ).
    CALL METHOD wd_this->att_wd_handler->add_parameter_field
      EXPORTING
        i_id          = 'CHB_DOWNLOAD_PATH'
        i_description = lv_str
        i_value       = lv_chb_download_path
        i_as_checkbox = abap_false.
Now based on the checkbox selection I want to make the field CHB_DOWNLOAD_PATH mandatory and also on F4 for CHB_DOWNLOAD_PATH I want a method to be called. Where must i write the coding for the above conditions and how? Please help.

hi
In your method there would be a parameter ie ON_TOGGLE where you can write the name of your event .
Whenever your checkbox will be clicked that event wil be called.
You can write your code in that event itself.
Regards
Kuldeep

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or
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or
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Regards,
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hi
In your method there would be a parameter ie ON_TOGGLE where you can write the name of your event .
Whenever your checkbox will be clicked that event wil be called.
You can write your code in that event itself.
Regards
Kuldeep

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id number,
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>
so do i need to put 10 unions or is there a better way to handle this stuff.
>
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begin
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exec set_view_flag( p_table_name => 'EMP2');

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Hi
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regards
chinnaiya

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<b></b>
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<i>Reward Points If It Helps YOU.</i>
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Dynamically changing attributes of a field in view container UI element

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