# Introduction ![](https://3552609976-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M50Y01TKemmHpSl6feB%2F-M50Y0ZIgvH_dYi7thL3%2F-M50Y1S-aGdgs0stR8ZK%2Flogo-dark.svg?generation=1587016411902076\&alt=media) The plugin provides an opportunity to add custom options for products with the possibility to calculate product price based on the chosen options and using custom maths formula! **Uni CPO – WooCommerce Options and Price Calculation Formulas** is a fully featured plugin that creates an opportunity to add custom options to your WooCommerce products as well as enables custom price calculation based on any maths formula. This version of the plugin includes these types of options: text input, text area, radio inputs and dropdown (select). This is the documentation for Uni CPO 4. The plugin has two versions: `Free` ([plugin's page on wordpress.org](https://wordpress.org/plugins/uni-woo-custom-product-options/)) and `Pro` *(*[*moomoo.agency/cpo*](https://moomoo.agency/cpo)*).* * [The list of the plugin's features available](https://kb.moomoo.agency/uni-cpo-4-documentation/why-uni-cpo). * [How to install/upgrade the plugin](https://kb.moomoo.agency/uni-cpo-4-documentation/installation) * Looking for the support? Start from reading [FAQ section](https://kb.moomoo.agency/uni-cpo-4-documentation/faq) - maybe your question is already answered there. Your question is not answered there? Contact us via support email: * Our official FB group * Our [YouTube channel](https://www.youtube.com/channel/UCC7Otx-N7qei-SEyuoGEftQ/) with video tutorials `Pro` label means that this feature is available in *pro* version of the plugin only. `Free | Pro` label means that this feature/functionality has basic possibilities in *free* version and additional possibilities in *pro* version of the plugin. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://kb.moomoo.agency/uni-cpo-4-documentation/master.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.