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Hi prestashopers. I write a module in which I save information in a complex form - serialized. The display of such information is illegible and unedited, which is why I want to display the input form. I just wanted to insert a value: public function renderForm() { $ unserializedArray = unserialize (AdParameters :: getParametersValue (Tools :: getValue ('id_ad_parameters'))); $ Result = ''; foreach ($ unserializedArray as $ key => $ row) { foreach ($ row as $ element) { $ Result. = '['. $ Element. ']'; } if (isset ($ unserializedArray [$ key + 1])) $ MyValue. = "\ R \ n"; } $ helper-> fields_value ['parameters_value'] = $ MyValue; ................ Form return parent::renderForm(); } AdParameters :: getParametersValue() is function quering DB When I list MyValue everythink is ok but in my list is not ok. However, it does not change the value. I need to replace it in the table and when editing in the form. Can anyone help me with this? Please. if you need a broader explanation, let me know, I'll send them.